A Letter From ANC

Welcome. Before we get into pacing windows and fueling math, I want to tell you what this playbook is — and what it isn't.

This isn't a training plan. We do training plans inside ANC, custom to you, your life, your race, and your physiology. This is something different. This is the language of racing 70.3 — the physiology you need to understand, the frameworks that turn data into decisions, and the mindset that holds it all together when your legs start talking.

I've raced 70.3 more times than I can count, on five continents, in every kind of weather, against every kind of field. I've had days where everything clicked and days where nothing did. The single biggest pattern I've seen — in my own racing and in coaching hundreds of athletes — is this: great 70.3s are not the result of one heroic effort. They are the result of dozens of small, correct decisions made when it would have been easier to make the wrong one.

Easier to push when you should settle. Easier to skip a gel when your stomach feels full. Easier to chase a pass when you should hold your number. Easier to negotiate with yourself at mile 9 of the run. The athletes who race best are not the ones with the most willpower in those moments — they're the ones who decided, weeks before, that they wouldn't have to make those decisions on the fly because the answer was already written down. That's what this playbook is for.

A 70.3 is long enough to humble you and short enough to tempt you. Four to six hours is enough time for adrenaline to wear off, for the heat to catch up, for the fueling errors of the bike to show up on the run, for the mental script to either save you or sink you. It's a distance that rewards patience in the first half and courage in the second. Most athletes do the opposite. We're going to fix that.

Whatever you've built in training is enough. Your job on race day is to access it cleanly. That means starting quieter than you feel, fueling earlier than you want, and trusting the body you've trained — not the one adrenaline is selling you in the first hour.

"Inside out first. Build the engine. Trust what you've built. Then — and only then — let's see what you've got."

Read this whole document before race week. Read the race-day sections again the week of. And on race morning, read nothing — you'll already know.

Let's get to work.

— Coach Angela

The ANC Way

Every coaching philosophy is built on a handful of non-negotiables. Mine come from twenty years of racing and coaching, and they show up in every plan we write, every workout we prescribe, and every race-day decision we make. There are four.

1. Aerobic First

The biggest, most durable gains in 70.3 don't come from intervals. They come from a deep, well-developed aerobic system — the engine that lets you ride 56 miles and then run a half marathon without falling apart. Most athletes under-train the aerobic system and over-train intensity. We do the opposite: we build a vast aerobic base, and then we sharpen it. Intensity is the icing. Aerobic capacity is the cake.

What this looks like in practice: the majority of your training hours each week are easy. Conversational. Nasal-breathing-possible easy. If that feels too slow, that's because your nervous system is used to a sympathetic, "always-on" state — and that's exactly what we're training out of you. Easy training builds mitochondrial density, capillarization, fat oxidation, and the orthostatic robustness your body needs to repeat hard sessions week after week.

2. Inside Out First

Workouts sit on top of a foundation. The foundation is sleep, fueling, stress regulation, and life stability. If the foundation is cracked, the workouts don't stick — they break you down without building you up. We always address the inside (recovery, food, sleep, nervous system) before we add more from the outside (volume, intensity, races).

This is the principle that decides whether you'll be racing strong in five years or recovering from another overtraining cycle. The athletes who win the long game treat recovery as training, not as the absence of training.

3. Repeatable Before Harder

A workout you can repeat next week beats a hero session that breaks you. We design training as a sequence of repeatable doses, not isolated heroic days. If a session leaves you trashed for three days, the math doesn't work — you lost more than you gained. The hardest part of coaching is restraining athletes who can do more today from doing more today, because we know the cost shows up next week.

4. Trust What You've Built

Race day is an expression of training, not an audition for it. You don't earn fitness on race morning. You earned it in the months prior. The job on race day is to spend what you've banked — wisely, patiently, with discipline — not to chase a level of fitness you haven't deposited.

This shows up most painfully in the first hour of the bike, when fresh legs and adrenaline whisper that you're stronger than you are. Trust the plan. Trust the numbers. Trust the work.

The 70.3 Trap

Most 70.3 races aren't lost in training. They're lost in the first 90 minutes of the bike.

Here's what happens. You've tapered. You're sharp. You slept well (eventually). You had your coffee, your pre-race breakfast, your warm-up swim. The cannon goes off. The swim feels strong — better than expected. You hit T1 with energy to spare. You mount the bike, settle into aero, and look down at your power meter. The number is well below what feels easy. Your legs are practically begging to push more. The cyclist who passed you on the swim is just up the road. You think: "I have so much in the tank. I'll bump it up just a little."

That decision — that one small "just a little" — is the single most expensive decision in 70.3 racing. It's the reason fit, well-trained, smart athletes have miserable second halves. It's the reason "I felt amazing on the bike and then crashed on the run" is the most common race report you'll ever read.

Why It Happens (The Physiology)

When you taper, your body is restored. Glycogen is full, fluids are topped up, muscles are repaired, nervous system is fresh. Adrenaline at the start raises your pain tolerance and dampens your perception of effort. So a power output that's actually above your sustainable race target feels like sustainable. RPE lies to you for the first 60–90 minutes. By the time RPE catches up — usually somewhere between mile 25 and 40 of the bike — the damage is done. You've overdrawn from your finite anaerobic reserves, you've pushed your core temperature higher than it needed to go, you've burned through carbs faster than you can replace them, and you've recruited muscle fibers that should have stayed in reserve for the run.

The metabolic cost of that "just a little" extra effort isn't linear. Going from 75% of Critical Power to 85% doesn't cost you 10% more — it costs you exponentially more, because you've moved further up the lactate curve and into a metabolic state your body can't sustain for 56 miles.

What Smart Athletes Do Instead

The athletes who race great 70.3s treat the first hour of the bike like an extended warm-up. They settle. They breathe. They eat. They let the day come to them. They watch other athletes blow past in the first 15 miles and they smile, because they know they'll see most of them again later — usually on the run, walking aid stations.

The race is decided on the back half of the bike and the second half of the run. Both require you to have something left. That requires discipline in the first half — discipline that feels, in the moment, like underperforming. It isn't. It's racing.

"In the first hour, your job is to make the bike feel almost too easy. If it feels exactly right, you're already overcooked."

The Three Most Expensive Errors

1. Over-biking the first 90 minutes. The single most costly mistake. Discussed above.
2. Under-fueling the bike. The bike is your fueling window. You can ingest 60–90 g of carbohydrate per hour comfortably on the bike. The run is much harder to fuel — sloshing, GI distress, less appetite. If you don't load the tank on the bike, you'll pay for it on the run, no exceptions.
3. Going out too hard on the run. The first mile of the run will feel uncomfortably good. Your bike legs will mask the actual cost of your pace. The athletes who run great 70.3s start the run feeling controlled, almost easy, and find their pace by mile 3. The athletes who blow up start the run feeling great and finish walking.

Avoid these three and you've already out-raced 60% of the field — not because you're faster, but because you're smarter.

Your Engine

You don't need a degree in exercise physiology to race 70.3 well. But you do need to understand five landmarks — five points on your physiological map — because they shape every decision we make in training and on race day. I'll explain each one in plain language, and then I'll tell you why it matters to you.

1. LT1 — The First Lactate Threshold

LT1 is the upper edge of what we call "truly easy." Below LT1, your body is producing lactate at a very low rate and clearing it just as fast — net lactate barely rises. You can hold this all day, fueled mostly by fat, with minimal metabolic stress. For most trained 70.3 athletes, LT1 sits around 85% of Critical Speed on the run and around 75–80% of Critical Power on the bike.

Why it matters: Most of your easy training should happen at or below LT1. This is where the aerobic adaptations live — mitochondrial density, capillarization, fat oxidation, cardiac stroke volume. Train below LT1 the majority of the week, and you build the engine that wins the back half of races.

2. The Aerobic Crossover

As intensity rises, your body shifts its fuel mix from predominantly fat toward predominantly carbohydrate. The aerobic crossover is the zone where that shift happens. Below it, you're burning lots of fat and sparing carbs. Above it, you're burning carbs at an accelerating rate.

Why it matters: Your 70.3 race effort — especially the bike — sits right around this crossover line. That's why fueling matters so much. You can't hold 56 miles of low-Z2 power on fat alone; you have to feed the system carbs. Get fueling right and you can hold the upper edge of your aerobic window. Get it wrong and you'll be forced to drop pace as your body downshifts to protect itself.

3. CS / CP — Critical Speed and Critical Power

CS (run) and CP (bike) represent the highest steady-state effort you can sustain for roughly 30–50 minutes before your physiology starts to fall apart. Think of CS/CP as the boundary between "hard but sustainable" and "this will end soon." Above this line, lactate accumulates faster than you can clear it, oxygen demand outpaces supply, and the clock starts ticking on how long you can hold on.

Why it matters: CS and CP anchor all your training zones. Every percentage you'll see in this playbook — race pace, threshold work, tempo, easy aerobic — is expressed as a percentage of CS or CP. Getting accurate values for CS and CP is the foundation of everything else. (See Chapter 7: Testing That Tells The Truth.)

4. sVO₂max — Speed/Power at Maximal Oxygen Uptake

sVO₂max is the speed (or power) at which you're using oxygen as fast as your body can deliver it. You can hold this for roughly 4–8 minutes before exhaustion. Above this line, you're working anaerobically — borrowing energy you'll have to repay.

Why it matters: In 70.3 training, we touch sVO₂max sparingly — short intervals to lift the ceiling — but we never race anywhere near it. If you find yourself approaching sVO₂max on race day, you've made a strategic error somewhere upstream.

5. D′ (run) / W′ (bike) — Your Finite Anaerobic Capacity

D′ and W′ are the finite "battery" you carry above CS/CP. Think of it as a fixed-size jar of matches. Every time you surge — a hill, a pass, a headwind, an emotional moment — you burn a match. Once the jar is empty, you cannot work above CS/CP anymore, no matter how much you want to. The jar refills slowly when you drop back below CS/CP, but never fully refills mid-race.

Why it matters: This is the most under-appreciated landmark in long-course racing. Every time you over-spike on a hill, chase a pass, or surge out of T1, you spend matches. By mile 40 of the bike, the athletes who spent their matches wisely have plenty left. The athletes who lit fires for fun have an empty jar — and the run is going to feel like an entirely different race.

Pacing Instruments — HR, Critical Speed, Power, RPE

You have four ways to measure effort on race day. Each one tells a different part of the story. Each one has strengths and blind spots. No single instrument should fly solo — the magic is in how you combine them.

Heart Rate

HR is a measure of internal load — what the effort is costing your cardiovascular system. It integrates everything: heat, hydration, sleep, stress, caffeine, fatigue, fueling state. That makes it incredibly informative — and incredibly noisy.

Pros: Reflects internal cost. Catches heat stress and dehydration before pace/power does. A great long-game indicator of whether you're managing the day.

Cons: Lags 60–120 seconds behind effort. Drifts upward over hours even at the same pace (cardiac drift). Can be artificially elevated by adrenaline, caffeine, or poor sleep. Can be artificially suppressed by fatigue or under-fueling. Chest straps are reliable; optical wrist sensors are often not.

Critical Speed (Run)

CS is your direct, objective pacing measure on the run. Expressed as min/mile or min/km, anchored to your most recent testing.

Pros: Direct, immediate, terrain-aware (with GPS). Doesn't lag. Doesn't drift with heat.

Cons: GPS noise can be significant — especially in tunnels, under trees, or in crowded courses. Doesn't reflect the cost of holding that pace on a hot day. Course terrain (hills, turns) can make raw pace misleading.

Power (Bike)

Power is the gold standard for bike pacing in 70.3. Expressed in watts, anchored to your Critical Power.

Pros: Instant. Terrain-independent (a watt is a watt whether uphill or down). Not affected by wind. The most precise pacing tool we have.

Cons: Doesn't reflect internal cost. You can hold target watts on a 95°F day while your body is cooking — the number looks fine even when the day is going sideways. Power tells you what you're doing, not what it's costing you.

RPE — Rate of Perceived Exertion

RPE is your subjective sense of effort on a 1–10 scale. The oldest and most universal pacing tool — and, when calibrated through training, one of the most powerful.

Pros: Always available. Integrates everything you're feeling — physiological, mental, emotional. The only instrument that adjusts in real time to how the day is unfolding.

Cons: Unreliable in the first 60–90 minutes when adrenaline is high. Unreliable late in races when fatigue masks signals. Requires training to calibrate — most athletes systematically under-rate effort early and over-rate it late.

How to Triangulate

The single most important pacing concept in this playbook: power/pace tells you what you're doing. HR tells you what it costs. RPE is the tiebreaker.

On the bike, your primary instrument is power. HR is your check engine light. RPE is your gut. On the run, your primary instrument is pace (CS%), then HR, then RPE.

When two instruments agree and one disagrees, trust the two. Examples:

• Power on target, HR rising, RPE rising: the day is getting expensive. Hold pace but address the cost — drink, cool, sodium, carbs.
• Power on target, HR on target, RPE high: probably mental, probably temporary. Breathe, reset, keep going. Don't change pace yet.
• Power on target, HR low, RPE low: day is unfolding well. Stay disciplined — don't chase. The number is the number for a reason.
• Power below target, HR on target, RPE high: something is wrong. Heat, fueling, fatigue. Address the cause; don't force the pace.

Your Zones

Zones are how we convert physiology into action. Here are the ANC zone tables for the bike (anchored to Critical Power) and the run (anchored to Critical Speed). These percentages assume your CP and CS are recent and accurate — if they're outdated or guessed, the zones will lie to you.

Bike Zones — % of Critical Power

Run Zones — % of Critical Speed

Key Physiological Markers

• LT1 ≈ 85% of CS (the line between truly easy and aerobic with effort).
• LT2 ≈ 105% of CS (the line between sustainable and not).
• 70.3 race window: Bike 79–89% CP, Run 85–95% CS.

If your zones don't feel right — if the prescribed paces feel impossible, or way too easy — that's a signal that your CS or CP is outdated. Re-test. Don't race off old numbers.

Testing That Tells The Truth

Zones built from a guess will lie to you on race day. Zones built from an outdated test will lie to you on race day. The single most valuable thing you can do for your pacing is to test honestly, test recently, and retest periodically.

Why We Use Critical Speed/Power Testing

Traditional FTP and LTHR testing rely on a single 20-minute (or 30-minute) all-out effort, then estimate threshold by subtracting a percentage. That works — barely — but it's noisy, demanding to execute well, and gives you a single data point. Critical Speed and Critical Power testing uses multiple shorter efforts at different durations, which mathematically separates your aerobic ceiling (CS/CP) from your anaerobic capacity (D′/W′). You get two numbers instead of one, both of which matter for pacing and training prescription.

The ANC Testing Protocol

Run (do these on the same week, 48+ hours apart):

• 3 minutes maximal — or 400 m all-out from a flying start.
• 6 minutes maximal — or 800 m all-out.
• 12 minutes maximal — or 3200 m / 2 miles all-out.

Bike (same week, 48+ hours apart):

• 3 minutes maximal power.
• 6 minutes maximal power.
• 12 minutes maximal power.

Swim:

• 200 m time trial.
• 400 m time trial.
• 800 m time trial (separate session, well-rested).

How to Execute a Test

1. Warm up properly. 15–20 minutes building from easy to a few short pickups. Don't go in cold.
2. Pace the first half conservatively. The biggest mistake in maximal testing is going out too hard. Start at what feels controlled-but-firm; push the final third.
3. Go to the well. The last 60 seconds should feel like you're racing for your life. If you finished comfortably, the data is suspect.
4. Recover fully between efforts. Easy spin / easy jog for at least 8–10 minutes.
5. Repeat every 8–12 weeks. Fitness changes. So should your zones.

What You'll Get Back

From those three efforts, we derive: CS or CP (your aerobic ceiling), D′ or W′ (your finite anaerobic capacity), your athlete profile (aerobic-dominant, anaerobic-dominant, or balanced), and personalized training zones for every workout type.

The Sustainable Aerobic Range

Your sustainable aerobic range is the band of effort where you can hold steady output without accumulating excess fatigue — the metabolic "all-day" zone. It's the most important physiological territory in long-course triathlon, and it's where 70.3 racing actually lives.

What It Is, Physiologically

Below this range, you're working so easily that you're not stressing the aerobic system enough to drive adaptation. Above it, you're producing lactate faster than you can clear it — fatigue accumulates, fuel burns faster, and the clock is ticking on how long you can hold on. The sustainable aerobic range sits between these two boundaries: roughly from LT1 at the bottom (around 85% CS / 75% CP) to just below CS/CP at the top.

The Four Tiers Within The Range

We break the sustainable aerobic range into four tiers, each with its own purpose:

Tier 1 — Very Low (50–70% CS/CP)

True recovery and aerobic base work. Heart rate is well below threshold. Breathing is fully nasal. You can speak in complete sentences. This is where the bulk of your weekly volume lives. Adaptations: mitochondrial density, capillarization, fat oxidation. Race-day relevance: warm-up, cool-down, the truly easy stretches.

Tier 2 — Low (70–82% CS/CP)

The "comfortable steady" zone. Conversational but with mild effort. This is your typical long-ride or long-run pace in training, and it's the zone you'll touch in the first 30 minutes of the bike on race day.

Tier 3 — Moderate (82–90% CS/CP)

The "all-day strong" zone — and the heart of 70.3 racing on the bike. RPE around 5–6. You're working, but you can imagine doing this for hours. This is the bike race zone. This is where the work of training in tiers 1 and 2 pays off.

Tier 4 — Upper (90–100% CS/CP)

The top of the sustainable range. RPE 7. You can hold this for 45–60 minutes, but not all day. This is your half-marathon race zone (on the run, 90–95% CS sits here) and your "back-half-of-the-bike when the day is going well" zone.

State Management — The Four Pillars

How you arrive at each workout — and at race day — matters as much as what you do once you're there. State management is the practice of monitoring and regulating your physical and nervous-system state so that the work sticks. Four pillars:

1. Equilibrium

Your baseline. Resting heart rate, heart rate variability (HRV), mood, sleep quality, energy. These are the daily signals that tell you whether your body is in a parasympathetic, recoverable state or a sympathetic, overdrawn one. The goal isn't to chase a perfect HRV number — it's to know your baseline and notice when you've drifted from it.

2. Drift Tolerance

How well you absorb load. Two athletes with the same fitness can have very different drift tolerance — one bounces back from a hard week in 48 hours, the other needs five days. Drift tolerance is built by consistency, sleep, nutrition, and progressive (not aggressive) loading. The more drift tolerance you build, the more you can train, the more you can race.

3. Overload Timing

Knowing when to push and when to hold. Overload — pushing past comfortable training stress — is necessary for adaptation, but only when applied at the right time. Pushing on a yellow-flag day costs more than it builds. Holding off when you're green is leaving fitness on the table. The art of coaching is knowing which day is which.

4. Restoration

Active recovery practices: sleep, food, downshift routines, parasympathetic time, walking, stretching, time outdoors, time off devices. Restoration isn't passive — it's a skill, and it's trainable.

This check-in takes 30 seconds. It saves seasons.

The Workout Toolkit

This isn't a training plan. It's the vocabulary of training — the categories of work we use to build a 70.3 athlete. Understand what each session is for, and you'll understand the logic behind any plan we write you.

Easy Aerobic Sessions

The bulk of weekly volume across all three sports. Heart rate well below threshold, RPE 2–4, nasal breathing possible. These sessions feel almost too easy — and that's the point. Adaptations: mitochondrial density, capillarization, fat oxidation, cardiac stroke volume, recovery between hard days. Trap to avoid: turning easy days into "moderate" days. Moderate is the enemy of both real easy and real hard.

Zone 2 Work

Sustained efforts at the upper edge of the easy aerobic band (roughly 75–85% CS on the run, 75–82% CP on the bike). This is where the 70.3 engine gets built. Sessions range from 30 minutes to 2+ hours of continuous Zone 2 work. RPE 4–5. Feels controlled, sustained, "I could do this forever." Why it matters for 70.3: the closer your Zone 2 ceiling is to your race-day target, the more durable your race effort.

Uphill Power Efforts

Short, controlled climbs — 30 seconds to 2 minutes — at high effort, with full recovery between. These build leg strength, force production, and neuromuscular power without taxing the aerobic system. On the bike: low-cadence (50–60 rpm) climbs in a big gear. On the run: hill repeats at controlled RPE 7–8 effort.

Neuromuscular Pickups (Strides)

10–20 second accelerations to near-top speed, with 60–90 seconds of easy recovery. Done 4–8 times at the end of an easy run or after a warm-up. They keep mechanics sharp, recruit fast-twitch fibers, and improve running economy. Low cost, high reward. Should be in your week year-round.

Long Bricks

The cornerstone of 70.3 training: a long bike ride immediately followed by a focused run off the bike. The bike teaches your body to fuel and pace; the run off the bike teaches your legs to perform under fatigue. We progressively extend both halves through the build phase. Why it matters: 70.3 is won and lost on the run-off-the-bike. Bricks rehearse exactly that.

Race-Specific Intervals

Sustained efforts at projected race pace/power, of progressively increasing total duration. Examples: 4 x 12 minutes at 70.3 race power on the bike. Or 3 x 15 minutes at 70.3 race pace on the run. These sessions rehearse the feel of race effort and confirm whether your target pace is realistic.

Threshold Work

Sustained efforts at or just below CS/CP — typically 8–20 minute intervals at 95–100% of threshold, with shorter recoveries. Used sparingly in 70.3 training (once every 1–2 weeks). Builds the aerobic ceiling and lifts CS/CP itself.

VO₂max Intervals

Short, hard intervals (3–5 minutes) at near-maximal effort. Used rarely in 70.3 prep — once every 2–4 weeks — to lift the engine's top end. Most 70.3 athletes need less of this than they think.

Pacing Workouts

The most underrated category. Sessions designed not to build fitness but to teach pacing — finishing every interval at the same time, holding negative splits, executing fueling without thinking. Pacing is a skill. We train it deliberately.

Strength For Triathletes

Strength training is the cheapest, most under-utilized performance gain in endurance sport. Two to three short sessions per week — 30–45 minutes each — will make you more durable, more economical, and more injury-resistant. It is not optional. It is foundational.

What Strength Does For You

• Protects joints and connective tissue. Cycling and running are repetitive load. Strength training prepares the tissue to absorb that load over thousands of repetitions without breaking down.
• Improves running economy. Multiple studies show that heavy resistance training improves running economy (less oxygen cost per mile) without increasing body mass. That's free speed.
• Builds force production. Hills, headwinds, surges, and final-mile pushes all require force. Strength training builds the capacity to produce that force without overdrawing.
• Maintains muscle as we age. Endurance training alone doesn't preserve muscle mass past 40. Strength training does.
• Reduces injury risk. Stronger glutes, stronger core, stronger feet — fewer injuries. Period.

What Strength Looks Like For 70.3 Athletes

You don't need to bodybuild. You need to lift with intent, focus on compound movements, and emphasize what's relevant to swim-bike-run: hip hinge, single-leg stability, posterior chain, core anti-rotation, and foot/ankle stiffness.

Typical structure: 2–3 sessions per week, 30–45 minutes, including compound lifts (squat, deadlift, hinge variations), single-leg work (split squats, step-ups, single-leg deadlifts), core anti-rotation and anti-extension work (planks, dead bugs, Pallof presses), and accessory work for the feet, ankles, and hips.

Heavier in the base phase, lighter and more maintenance-focused as you approach race day. We don't drop strength training in race build — we taper it.

Fueling & Hydration

Fueling is the most controllable variable in 70.3 racing — and the most common cause of disastrous days. The good news: it's math, and math can be practiced.

The Math Of A 70.3

A 70.3 takes 4–6 hours for most athletes. Over that time, you'll burn somewhere between 2,500 and 4,500 calories depending on size and intensity. You cannot replace all of that on the course — your gut can absorb only so much per hour — but you must replace enough to keep glycogen from bonking and electrolytes from crashing.

Targets For 70.3

These ranges are starting points. Bigger athletes, hotter days, harder efforts → upper end. Smaller athletes, cooler days, sensitive guts → lower end. Personalization matters more than perfection.

The Bike Is Your Fueling Window

This is the single most important fueling concept in 70.3 racing: the bike is where you load the tank. You can ingest 60–90 grams of carbs per hour comfortably on the bike — the aero position is more forgiving on the gut than the bouncing of the run, and you have your bottles right there. Once you start the run, your absorption capacity drops, your appetite often disappears, and aid stations are spread out. If you arrive at T2 under-fueled, you will not catch up on the run.

Carb Loading Pre-Race

Two to three days out, increase carbohydrate intake to 6–10 g per kg of body weight per day. This isn't pasta-binge night — it's a sustained, progressive load over 48–72 hours. Reduce fat and fiber as you get closer to race day to minimize GI risk. Hydrate generously, with electrolytes.

The Pre-Race Meal

3 hours before start, eat 100–150 g of easily-digested carbs (oatmeal, white toast with jam, a bagel with honey, a sports drink + banana). Familiar foods only. No experiments. Sip fluids steadily until 30 minutes before the swim.

Gut Training

The gut is trainable. Most athletes can comfortably handle 40 g of carbs per hour with no preparation. Training the gut to handle 80–100 g per hour requires deliberate practice — start with the volume you'll race with, and rehearse it in long training sessions until it's second nature. Never use a new fuel or new strategy on race day.

What To Eat

Choices are personal. Common combinations include energy gels + sports drink + a chew or solid every hour or two. Some athletes use drink mix only (e.g., one bottle with 90 g of carbs). Some use real food (rice cakes, dates, mini sandwiches). The "best" fuel is the one your gut tolerates at race intensity. Test in training.

Hydration & Sodium

Fluid loss varies enormously — from under 500 ml/hr in cool conditions to over 1,500 ml/hr in heat. Sodium loss varies too. Heavy/salty sweaters need the upper end (600+ mg/hr); average sweaters need 300–500 mg/hr. A sweat test is worth doing.

Recovery & Sleep

Recovery is where fitness is built. The workout is the stimulus. The adaptation happens between sessions — and the foundation of that adaptation is sleep.

Sleep Is Your #1 Performance Tool

Aim for 7.5–9 hours per night through the build phase. Protect it ruthlessly in race week. Sleep is where growth hormone is released, where glycogen is restocked, where neural pathways are consolidated, where immune function is restored, where mood is regulated. There is no supplement, no gadget, no recovery modality that comes close to the impact of consistent, sufficient sleep.

If you can only optimize one thing in your life as an endurance athlete, optimize sleep. Consistent bedtime. Cool, dark, quiet room. No screens 60 minutes before bed if possible. Caffeine cutoff by early afternoon. Alcohol minimized — it destroys sleep architecture even if it helps you fall asleep.

Nutrition As Recovery

Post-workout fueling within 30–60 minutes — particularly after long or hard sessions — accelerates glycogen restoration and tissue repair. Aim for a mix of carbs (1 g/kg body weight) and protein (20–30 g) shortly after key sessions. Day-to-day, eat enough. Under-fueling is the silent killer of endurance progress.

Stress Regulation

Your body cannot distinguish between training stress, work stress, family stress, and emotional stress. They all draw from the same recovery budget. The athlete who trains 12 hours/week but also has a high-stress job, two kids, and poor sleep is carrying the equivalent stress load of a pro training 25 hours/week. Manage what you can — and let the training adapt accordingly.

Active Recovery

Walking, easy swimming, light mobility work, time outdoors, time off devices. These aren't training — they're restoration. The athletes who recover best treat restoration as a skill, not an accident.

Recovery Modalities

Massage, foam rolling, compression boots, ice baths, sauna — all have some evidence behind them, none replace sleep and nutrition. Use what feels good and is sustainable. Don't chase the latest gadget.

Race Week

Race week is where good athletes get great and great athletes get nervous. The goal is simple: arrive at the start line rested, fueled, calm, and confident. Everything you do in race week should serve that goal. Nothing else.

Course Scouting — Know What You're Racing

Study the bike and run course in detail. Don't show up on race morning and "see how it goes."

• Bike course: Note climbs (length, gradient, where in the course). Note technical descents and sharp turns. Note exposed sections (wind, sun). Note surface changes (chip seal, bumps, expansion joints). Identify the section that will be hardest mentally — usually mile 35–45 — and plan for it.
• Run course: Note hills. Note shade vs. sun exposure. Note loop structure (out-and-back, two-loop, three-loop). Mark every aid station and know exactly where they are. Know where the bike-to-run mile markers transition.

Aid Station Strategy

On the bike, most races have 2–4 aid stations. Know what they offer (water, sports drink — and which brand), where they are, and what you'll grab vs. what you'll carry from your own supply. On the run, aid stations are typically every mile or 1.5 miles. Plan to hit every single one. Even in the first 3 miles. Even if you don't feel you need it. The cost of skipping an aid station early is paid for at mile 10.

Weather & Heat

Check forecasts daily starting 7 days out. Build a contingency for hot, cold, windy, and rainy conditions. If the day is hot (above 75°F / 24°C with humidity), adjust your targets before the race starts:

• Lower bike power target by 5–10 watts (or 3–5% of CP).
• Lower run pace target by 10–20 sec/mile.
• Increase fluid intake by 20–30%.
• Add cooling at every aid station — water on head, neck, wrists.

Heat costs more than wind or hills. Respect it. Read more on heat acclimation →

Travel & Logistics

Arrive in the race location at least 48 hours before the start (longer if traveling across time zones). Use the day before race day as a calm logistics day — bike check-in, transition setup, course drive, athlete briefing. Avoid long walks, long expo browsing, or anything that drains your legs or your nervous system.

Sleep Strategy

The most important night of sleep is two nights before race day. Race-eve sleep is notoriously poor — adrenaline, nerves, early alarms. Stack sleep in the days leading in. If you sleep poorly the night before, it does not meaningfully impact race-day performance — but it impacts your mood, so plan to be okay with a bad night.

Kit Layout

Lay everything out two days before the race. Do a dry run of T1 and T2 in your room. Check every piece. Tire pressure, race number, timing chip, helmet, goggles, wetsuit, shoes, socks, gels, bottles, sunglasses, cap, sunscreen, watch charged. Make a list. Check it twice.

Fueling Rehearsal

Practice your race-day breakfast at least twice in the final two weeks — same food, same timing. Practice your race-day fueling on your last long ride. Don't experiment with anything new in race week.

Mental Rehearsal

Spend 10 minutes a day in the final week visualizing the race. Don't just visualize success — visualize hard moments and how you respond. Visualize the swim exit, the first hour of the bike, the toughest climb, T2, the first mile of the run, mile 9 when it gets hard, the final 5K. See yourself executing each one with composure. You're rehearsing the script your brain will run on race day.

Spectator & Support Plan

Tell your people exactly where you'll be and when. Set their expectations: "I won't look happy at mile 9 of the run. Cheer anyway." Give them landmark spots so they can move to multiple points on the course. Decide ahead of time whether you want to interact with them or just nod and keep moving.

Taper

The taper is where fitness gets unlocked. It is not a passive waiting period — it is a deliberate, structured reduction in volume that allows your body to absorb the months of training, restock glycogen, repair tissue, and arrive on race day primed. Done well, it makes you sharper. Done poorly, it leaves you flat, anxious, or stale.

The 70.3 Taper Is Shorter And Sharper

For a 70.3, the taper is typically 10–14 days — shorter than for a full-distance race. Volume drops by 30–50% over those two weeks. Intensity stays. You'll still do short race-pace efforts, a few openers, and short threshold touches. What disappears is the long stuff and the high-volume weeks.

What Taper Does To Your Body

During the build, you accumulate fatigue alongside fitness. Tapering removes the fatigue while preserving — and often slightly improving — fitness. Glycogen stores supercompensate. Plasma volume normalizes. Muscle damage heals. Neuromuscular pathways stay primed by short intensity. The net effect: a body that's ready to express what it's built.

Week Of: A Typical Structure

• 7–10 days out: Last meaningful long session. Total weekly volume around 70% of peak.
• 4–6 days out: Short race-pace efforts on bike and run. 30–50% of peak volume. Quality over quantity.
• 2–3 days out: Very short openers — 30–45 minutes total, including a few 30–60 second pickups at race pace or slightly above. Wake the system up; don't tire it.
• Day before: Short shake-out swim, short bike spin (15–20 min) with a few race-pace pickups, very short run (10–15 min). Stay loose, stay calm.

What You Will Feel — And It's Normal

The emotional and physical journey of a taper is predictable and uncomfortable. Expect:

• Days 1–4: Heavy, flat, sluggish. Your body is dumping fatigue. Workouts may feel terrible. This is normal.
• Days 5–9: Coming around. Energy returning. Some sessions feel sharp, others still flat. Inconsistent. This is normal.
• Days 10–14: Sharp, restless, sometimes anxious. Phantom aches, second-guessing your training, convinced you're losing fitness. All of this is normal.

Do not try to "test" your fitness in the taper. Do not add workouts. Do not change anything. The work is done. Your only job now is to rest, fuel, sleep, and stay calm.

Race Morning

The race starts long before the cannon. Race morning is a sequence of small, calm, rehearsed actions. Done right, you arrive at the swim start ready, fueled, and composed. Done wrong, you're behind before you start.

3 Hours Before Start: Wake And Eat

Set your alarm for 3 hours before your wave start. Eat your rehearsed pre-race meal — 100–150 g of easily-digested carbs. Common choices: oatmeal with banana and honey, a bagel with jam, white toast with peanut butter and jelly, a sports drink with a banana. Nothing new, nothing experimental.

Sip fluids steadily. Add electrolytes if it's going to be a hot day. Caffeine if you've trained with it — 100–200 mg roughly 60 minutes before the swim is a typical strategy.

2 Hours Before: Logistics

Get to transition early. Check your bike (tires, brakes, computer paired). Set up your transition area exactly as you rehearsed. Pump tires to your target pressure. Drop nutrition on the bike. Check timing chip. Restroom. Stretch lightly if you want. Talk to nobody who is panicked.

60–90 Minutes Before: Final Sips, Final Carbs

Take in a final 20–30 g of carbs (a gel, a small bottle of sports drink). Sip water. Don't over-hydrate — you don't need a full bladder at the start line. Restroom one more time if you can.

30 Minutes Before: Wetsuit, Warm-Up, Move To Start

Get into your wetsuit. Find your start corral. If swim warm-up is available, take 5–8 minutes of easy swimming with a few 20-second pickups to wake up the heart rate. If no warm-up is allowed, do dynamic arm swings, light jogging, and breath work.

10 Minutes Before: Center Yourself

Three deep breaths. Remind yourself of your race-day mantra. Visualize the first 200 m of the swim. Smile. You've trained for this. Now you get to race it.

"Let's see what I've got."

The Swim — 1.2 Miles

The swim doesn't win a 70.3. But a bad swim can wreck one. The job in the water is simple: get out steady, stay relaxed, exit ready to ride.

Mindset

The swim is the most adrenaline-loaded segment of the day. The start is chaotic. Hearts are pounding before you've taken a stroke. Athletes around you are kicking, swimming over each other, breathing erratically. The single most important mental skill in the swim is staying calm in chaos. Composure is faster than panic.

Pacing Target

RPE 5–6. Breathing controlled, stroke long, kick relaxed. Effort just below "comfortably hard." If you're gasping in the first 200 m, you're going too hard and you'll pay for it on the bike. The swim should feel like a strong warm-up — not a race effort.

Execution Script

Pre-Start

Position yourself based on your honest swim ability. Fast swimmers up front, mid-pack swimmers in the middle, less-confident swimmers wide or back. Do not start in the front if you're not a front-pack swimmer — you'll get swum over and panic. Take three deep breaths in the final 30 seconds.

First 200 Meters — Settle

The hardest part of the swim. Adrenaline is peak, contact is heaviest, breathing is hardest. Your job: stay calm, take controlled strokes, breathe every 2 or 3 strokes, accept the chaos. Don't try to swim fast. Don't try to find clear water yet. Just swim. The chaos thins after 200 m.

200 m to 1000 m — Find Rhythm

Once the field spreads, find your pace and your line. Sight every 6–8 strokes. Look for feet to draft — sitting on the feet of a slightly faster swimmer can save 10–15% of your energy. Long stroke, relaxed kick, controlled breathing. RPE 5–6. You should feel like you could swim much harder if you needed to.

1000 m to Exit — Build Slightly

In the final 400 m, kick a little more to wake up the legs for T1 — but don't sprint. Sight more frequently as you approach shore. Plan your exit: where to stand up, where to start unzipping your wetsuit.

Final 50 m — Prep T1 Mentally

As soon as you touch bottom, run out shallow until water is shin-deep, then high-knee through to shore. Reach back and pull your wetsuit zip down as you run. Goggles up onto your forehead, cap off. You're heading to T1.

Common Swim Mistakes

• Going out too hard in the first 100 m. Sets a tone of panic and elevated HR that takes 20 minutes to settle.
• Holding breath under stress. Breathe out fully into the water. The most common cause of mid-swim panic is CO₂ buildup from not exhaling.
• Bad sighting. Sighting too often slows you. Sighting too rarely sends you off course. Find the rhythm.
• Fighting the contact. If someone bumps you, keep swimming. Don't lift your head. Don't get angry. Just adjust your line and keep going.

T1 — Swim To Bike

T1 is where seconds are won and minutes are lost. The goal: efficient, calm, sequenced. Not rushed.

Sequence

1. Run from swim exit to your bike. Wetsuit zip already down.
2. At your bag/rack: wetsuit off (legs out one at a time — sit on the ground if you need to).
3. Helmet on. Buckle helmet before touching the bike. (Race rules — and habit.)
4. Race belt on. Sunglasses on. Bike shoes on (or leave clipped to bike if you've practiced flying mounts).
5. Grab a gel and start chewing it as you run.
6. Run with bike to mount line. Mount. Clip in. Go.

The First 20–30 g Of Carbs

Take in a gel or fluid carbs in the first 5 minutes of the bike. You exited the swim having burned through some glycogen — start replacing immediately. Don't wait for the "first hour" to start fueling.

Common T1 Mistakes

• Sitting and fiddling with everything. Stand if you can. Move with purpose.
• Forgetting helmet-before-bike — instant DQ in many races.
• Sprinting out of T1. You'll spike your HR for no reason. Smooth, not fast.

The Bike — 56 Miles

This is the race-winning segment of a 70.3. Not because it's the longest in time (though it is), but because the bike is where most races are lost. Get the bike right and the run becomes possible. Get the bike wrong and the run becomes survival.

Pacing Target

79–89% of Critical Power (low-to-mid Z2). RPE 5–6 for the first 45 minutes, building toward 6–7 in the back half. HR will drift up throughout — that's expected. Hold power, not HR.

The Strategic Frame

Think of the 56 miles in three blocks. Each has a different job. Each has different decisions to make.

Block 1 — Miles 0–18: Settle

Target: 79–84% CP. RPE 5. Heart rate elevated from swim.

This is the most important block of the race. Adrenaline is high, legs are fresh, you'll feel like you can push harder. Don't. The job here is to settle in, get HR under control, start fueling, and remind yourself that the race is decided in blocks 2 and 3.

• First 5 minutes: spin easy, get HR down from the swim. Sip fluids. Take a gel.
• Miles 1–10: Find your aero position. Smooth pedal stroke. Cadence 85–90 rpm. Check power every minute or two. If you feel great, you're probably going too hard.
• Mile 10–18: Lock in. Power should feel almost too easy. Fueling on schedule: 60–90 g carbs/hr starting now.
• Mental cue: "Quiet. Patient. The race comes later."

Block 2 — Miles 18–40: Find Rhythm

Target: 82–88% CP. RPE 6. The "all-day" zone.

This is where the race takes shape. Find your steady. Hold it. Eat. Drink. Stay aero. Pass when it's appropriate; don't surge to chase.

• Mile 18–25: Hold the upper edge of your target. Fueling locked in. Drinking every 10–15 minutes.
• Mile 25–35: Often the mental low point of the bike — the novelty has worn off and the finish is still far. Plan for this. Have a mental cue ready ("This is the middle. Stay strong. Keep eating.").
• Mile 35–40: Stay disciplined. People around you may be cracking — don't let their bad pacing change yours.
• Mental cue: "Steady. Eat. Drink. Aero."

Block 3 — Miles 40–56: Strong, Not Sloppy

Target: 85–89% CP. RPE 6–7. Hold form.

The final block. The temptation here is twofold: either to push too hard (you're close to the finish, you feel okay, why not?) or to back off too much (preserving for the run). Neither is right. The right answer is to maintain — same effort, same fueling, same form.

• Mile 40–50: Stay aero, stay focused. Final hour of fueling matters most — your gut tolerance is highest now and you'll need every calorie on the run.
• Mile 50–54: Begin to think about T2. Mental rehearsal. Last big gulp of fluids. One more gel if you can.
• Mile 54–56: Spin up cadence, ease power slightly. Get blood into the legs. Prep for the dismount.
• Mental cue: "Bring it home strong. The run is coming."

Hills On The Bike

Treat climbs as short surges, not race efforts. On climbs under 2 minutes, you can allow power to drift into Z3 (89–95% CP). On longer climbs, hold the bottom of Z3 or top of Z2 — don't redline. Recover on the descents. Spin out, drink, eat. Do not hammer the descent — gravity is doing the work for you, and surging downhill is one of the most expensive mistakes you can make.

Headwinds & Crosswinds

In headwinds, watch power, not speed. Speed will drop dramatically and it can mess with your head — but if your power is on target, you're doing the work. In crosswinds, prioritize control over aero — sit up if you need to.

Hot Days On The Bike

On hot days, lower your power target by 5–10 watts and prioritize cooling: water on your head and arms at every aid station, more sodium, more fluids. The bike is your cooling window — the run gives you almost no opportunity to lower core temperature.

Drafting & Passing

Know the rules of your race (typically 10–12 meters of bike length between athletes). Pass cleanly and quickly when you pass. Don't sit in the draft zone. Don't yo-yo. If someone is sitting on you, hold pace — the marshal will handle it.

T2 — Bike To Run

T2 is faster than T1 — less to take off, less to put on. But it's also where the legs are at their weirdest, and where you need to make a few smart decisions.

Sequence

1. Approach the dismount line at controlled speed, unclip in time, dismount smoothly.
2. Run with bike to your rack. Helmet stays on until bike is racked.
3. Rack bike. Helmet off. Bike shoes off. Run shoes on.
4. Race belt should already be on from T1. Grab any run nutrition (gels, salt tabs). Hat or visor on. Sunglasses adjusted.
5. Take one final sip and one gel as you exit transition.
6. Run out of T2 at controlled pace. The first mile will feel weird — that's expected.

The First Mile

Your legs will feel heavy, your stride will feel short, and your perceived effort will be high. This is normal. Don't panic. Don't try to "find your pace" by pushing harder. The legs come around by mile 2–3. Trust the process.

The Run — 13.1 Miles

The half-marathon at the end of a 70.3 is not the same as a standalone half-marathon. Your legs are pre-fatigued from 56 miles of riding. Your glycogen is partially depleted. Your core temperature is elevated. You will not run a personal best half off a 70.3 bike — and you shouldn't try to.

The job on the run is to hold a steady, disciplined effort that gets faster (or stays even) as the miles progress. Most athletes' splits look like a U-curve: fast first 3 miles, slow middle, slow finish. The athletes who run great 70.3 halves have flat or slightly negative splits.

Pacing Target

85–95% of Critical Speed. RPE building from 6 → 7 → 8 across the race. HR will be high from the start — that's the bike legacy. Trust pace, not HR.

The Run In Four Blocks

Block 1 — Miles 1–3: Restraint

Target: 85–88% CS. RPE 6. Cadence 88+.

The hardest discipline on the entire course. Your legs are weird, your HR is high, and your competitive brain wants to "get on pace." Don't. The first 3 miles are about settling — finding cadence, finding rhythm, letting the legs come around.

• Mile 1: Just run. Don't even look at pace. Cadence over speed. Let HR settle.
• Mile 2: Find aid station rhythm — every one, every mile. Carbs and fluids.
• Mile 3: Now check pace. You should feel surprised at how restrained it feels. Good.
• Mental cue: "Patience now buys speed later."

Block 2 — Miles 4–8: Locked In

Target: 88–92% CS. RPE 6–7. Cadence holding.

This is the body of the race. You're warmed up, fueled, in rhythm. Hold it. Most athletes find that miles 4–7 feel the best — savor that, but don't get greedy.

• Hit every aid station. Carbs every 30–45 minutes minimum.
• Water on head, neck, wrists if it's warm.
• Pass cleanly. Don't get pulled into someone else's pace.
• Mental cue: "Smooth. Strong. Steady."

Block 3 — Miles 8–10: Commitment

Target: 90–95% CS. RPE 7. Cadence focus.

The middle of the back half — and the moment the race becomes a race. You will start to feel the cost. Legs will feel heavy. The mental script will start to negotiate ("Maybe just walk the next aid station…").

This is where 70.3s are decided. The athletes who hold form here, who keep fueling, who refuse to negotiate, are the ones who run strong finishes. The athletes who let the wheels start to come off at mile 9 are walking by mile 11.

• Shorten stride slightly, lift cadence.
• Drop shoulders. Open chest. Eyes up.
• Take in extra sodium if it's hot.
• Mental cue: "This is the race. Hold the line."

Block 4 — Miles 10–13.1: The Final 5K

Covered in detail in the next chapter.

Aid Station Strategy On The Run

Hit every single one. No exceptions, even in the first 3 miles. Here's the standard sequence:

• Approach: Slow slightly (don't stop), make eye contact with the volunteer holding what you want.
• Grab: Take the cup. Pinch the top to form a spout. Drink while walking 5–10 steps if needed.
• Cool: Take a second cup of water just for cooling — head, neck, wrists.
• Fuel: Gel every 30–45 minutes (typically miles 1, 4, 7, 10).
• Restart: Resume running pace immediately.

Form Cues That Matter Late In The Race

• Cadence: Keep it above 88. When fatigue hits, cadence drops first. Force it back up.
• Stride: Shorter, not longer. Overstriding fatigues you faster.
• Posture: Eyes up, chest open, slight forward lean from the ankles (not the waist).
• Arms: Relaxed shoulders, arms swinging from the shoulder, not crossing the body.
• Breath: Steady, rhythmic. If you can't get a full breath, ease pace slightly.

The Final 5K

Mile 10 to 13.1. This is what training is for.

The final 5K of a 70.3 is the most honest 20–25 minutes of your athletic life. There's no more strategy to execute. No more fueling decisions to make. No more pacing to dial in. Just one question: what have you got?

The Physiology Of The Final 5K

By mile 10, you've been racing for somewhere between 3.5 and 5.5 hours. Glycogen is low. Core temperature is high. Muscle damage is accumulating. Your nervous system is fatigued. RPE is climbing even at the same pace — what felt like a 7 at mile 6 feels like an 8 at mile 10 and a 9 at mile 12.

This is where your training shows up. Every Zone 2 mile, every brick run, every long ride, every disciplined easy day — it all converts here. The athletes with deep aerobic engines find another gear. The athletes who skipped easy work, who chased intensity, who under-recovered — they shuffle.

Pacing Target

RPE 8 climbing toward 9. Pace at or just below 95% CS. If the day allows, dip into Z3 (95–105% CS) in the last mile.

This is the only segment of the race where you should be willing to push beyond your sustainable aerobic range. You've banked everything for this — now spend it.

Execution Script

Mile 10–11: Commit

• Make the decision: I am going to run this in. No negotiating.
• Shorten stride. Lift cadence. Drop shoulders.
• Tunnel vision to the next aid station.
• Mental cue: "Three miles. I have three miles in me."

Mile 11–12: Hold The Line

• The hardest mile of the day. The finish is close but not close enough to feel real.
• Break it into chunks: next mile marker, next aid station, next 60 seconds.
• If you can pass someone, pass them — and pass them with intention. No half-passes.
• Mental cue: "This is the part I trained for."

Mile 12–13.1: Finish Strong

• Now you can let it go. RPE 9. If you have a kick, use it in the last 800 m.
• Run through the line, not to the line.
• Smile at the finish chute. You earned it.
• Mental cue: "Let's see what I've got."

What If The Wheels Are Coming Off?

Sometimes the final 5K isn't about pushing harder — it's about not falling apart. If you're cramping, dizzy, GI-distressed, or hitting a glycogen wall, the goal becomes survival. Shorten stride dramatically, walk aid stations, take in salt and fluids aggressively, run the running parts and walk the walking parts honestly. There is no shame in walking. There is shame only in not finishing what's within your power to finish.

"Trust what you've built. Then — finally — let's see what you've got."

Heart-Rate Drift — Reading And Responding

Cardiac drift is one of the most misunderstood phenomena in long-course racing. Understanding it changes how you read your data on race day.

What Cardiac Drift Is

Over the course of a long race, your heart rate slowly climbs even when your pace and power are exactly the same. This isn't a sign you're working harder — it's a sign your body is adapting to accumulated demands: dehydration (reduced blood volume → heart has to beat more to deliver the same oxygen), heat (peripheral blood flow for cooling reduces central return), fatigue (slight loss of stroke volume efficiency), and fueling status.

Drift of 5–10 bpm over a 4–6 hour race is normal. Drift of 15+ bpm is a warning sign.

How To Respond To Drift

The mistake most athletes make is chasing HR — slowing down to keep HR in their original target zone. Don't chase HR. Instead, read the trio:

The Reset Protocol

If you notice HR climbing too fast (more than 5 bpm above where you'd expect at that point in the race), execute a reset:

1. Slow slightly for 60–90 seconds — power down 5–10% or pace easier by 10–15 sec/mile.
2. Take in fluids — 200–300 ml in the next 5 minutes.
3. Cool — water on head, neck, wrists if available.
4. Take in sodium — a salt tab or a swig of higher-sodium drink.
5. Slow your breath — three deep breaths, controlled exhale.
6. Resume target pace and reassess in 10 minutes.

Often the reset alone brings HR back down and you can resume original targets. Sometimes it doesn't, and that's data too — the day is hotter, harder, or you're more depleted than expected, and a 5–10% adjustment to your targets is the right call.

The Mental Game

Every 70.3 has at least one hard patch. Usually two or three. The athletes who race well are not the ones who don't have hard patches — they're the ones who have a plan for them.

The Predictable Hard Moments

Knowing where the hard moments tend to happen is half the battle. Plan for them:

• The first 200 m of the swim. Adrenaline, contact, breathing chaos. Plan: stay calm, breathe out, accept it.
• Mile 25–40 of the bike. Middle-bike mental low. Plan: a mental cue, a fueling checkpoint, a focused 10-minute block.
• The first mile of the run. Heavy legs, high HR. Plan: cadence over speed, no panic.
• Mile 8–10 of the run. The negotiation. Plan: a pre-decided answer to "should I walk?" — and that answer is "no, not yet."
• Mile 11. Closest to the finish, furthest from feeling done. Plan: chunking — next mile marker, next aid station, next 60 seconds.

Tools For Hard Moments

Reframe The Sensation

The body sends signals. The brain interprets them. The same physical sensation can be interpreted as "I'm dying" or "this is what racing feels like." The interpretation is trainable. When the legs start to scream, the right frame is: "This is the work showing up. This is what I came here for."

Chunk The Distance

Don't think about how many miles are left. Think about the next mile marker. Then the next. Then the next aid station. The brain handles small chunks far better than big ones.

Use Mantras

A pre-rehearsed phrase that activates the right state. Examples: "Smooth. Strong. Steady." "Trust the work." "Cadence, breath, posture." "One mile at a time." "Let's see what I've got." Pick yours. Use it. Repeat it.

Three-Breath Reset

When things spiral mentally — frustration, panic, doubt — execute three slow, deep breaths. In through the nose for 4, out through the mouth for 6. Three of those resets your nervous system enough to make the next decision well.

The Process Loop

When you don't know what to do, return to the process: Cadence. Posture. Breath. Fuel. Check each one. Adjust if needed. Repeat. The process loop gives your brain a job and prevents catastrophic thinking.

Self-Sabotage Pitfalls

These are the unforced errors. None of them are about fitness. All of them are about discipline. Recognize them — and refuse them.

Surging The First Hour Of The Bike

Already covered, but worth repeating: this is the most common race-ending mistake in 70.3. The fix is mental, not physical. Decide before the race that the first hour will feel almost too easy, and then enforce that decision.

Skipping Fuel Because "I Feel Fine"

You feel fine because you're well-fueled. Skipping a feed because you don't feel hungry is like skipping an oil change because the car is running smoothly. Stay on schedule. Hunger is a lagging indicator.

Chasing A Pass Instead Of Holding Your Number

Someone passes you. Your competitive brain says: "Stay with them." You bump power up. Now you're racing them — not racing your plan. The pass costs you 20 minutes from now. Hold your number. Let them go. You may see them later.

Letting Cadence Drop When It Gets Hard

As fatigue hits, cadence is the first thing to slip — both on the bike and the run. Lower cadence feels easier in the moment but is more muscularly costly. Force cadence back up. It's free speed.

Negotiating With Yourself At Mile 9 Of The Run

"Maybe just walk this aid station." "Maybe ease the pace a little." "I'll pick it back up at mile 11." These are the lies fatigue tells. The answer is no. Walk if you genuinely need to. Don't walk because the brain is looking for an excuse.

Going To The Bathroom As An Escape

Sometimes the porta-potty is legitimately necessary. Sometimes it's a 90-second escape from racing. Be honest with yourself. If you go, go quickly and get back out.

Overcooling Or Undercooling

On hot days, athletes either ignore cooling entirely (overheats) or take so much water on themselves they slosh and get chilled. Aim for the middle: head, neck, wrists at every aid station. Not full dousings.

Looking At Your Watch Every 30 Seconds

Excessive data-checking is a sign of anxiety, not race execution. Set your watch on auto-lap. Check power/pace once per minute or two. Trust the plan.

Contingency Plans

The plan you start with is rarely the plan you finish with. Things go sideways. The athletes who handle adversity well are the ones who have pre-decided how to respond. Here's the playbook.

The Universal Contingency Response

For anything not on the list: Stop. Breathe. Assess. Respond. Resume. The five-step loop handles 95% of unexpected situations. Panic handles 0%.

After The Finish

The race ends at the finish line. The recovery starts immediately. What you do in the 24–72 hours and 1–2 weeks post-race shapes how quickly you bounce back — and whether you carry forward the fitness you just built.

First 30 Minutes

• Walk. Don't sit. Keep moving for 10–15 minutes to clear lactate and prevent stiffening.
• Drink — fluids with electrolytes. Sip steadily, don't chug.
• Eat within 30 minutes — carbs and protein. Real food if you can stomach it.
• Get out of wet clothes if cold; cool down if hot.
• Medical tent if anything feels off — dizziness, confusion, persistent cramping, GI distress that won't clear.

First 24 Hours

• Eat well — multiple meals, balanced macros, lots of fluids.
• Walk. Easy movement only. No structured exercise.
• Sleep — prioritize it. Your body is doing massive repair work overnight.
• Hydrate steadily — you'll be in fluid debt for 24–48 hours.
• Avoid alcohol if you can — it impairs the recovery you just earned.

Days 2–7

• 5–7 days of fully easy movement. Walk, easy swim, easy spin. No structured workouts.
• Listen to your body. Some athletes feel okay by day 3; others need a full week.
• Pay attention to sleep, appetite, mood, and motivation — these are your recovery signals.
• Light strength work (mobility, single-leg stability) is okay from day 3–4. No heavy loading.

Week 2 And Beyond

Resume structured training only when you feel genuinely motivated and physically recovered. For most athletes, that's 10–14 days post-race. The first week back should be 50–60% of pre-race volume, all easy aerobic, before reintroducing intensity.

Race Review

Within a few days post-race — but not on race day itself — sit down and review the race honestly. What went well? What didn't? What surprised you? What would you do differently? Write it down. Send it to your coach. The race is the most expensive workout of the year — extract every lesson from it.

Work With ANC

This playbook gives you the language and the frameworks. The next step is putting them into practice — with the structure, accountability, and personalization of a real coach behind you.

Whether you want a fully customized 1-on-1 relationship, a smart training plan that adapts to your life, or just better zones and a clearer picture of your physiology, we have the path for you.

Free Resources

Want to keep learning? Start here:

• ANC Knowledge Hub — Articles on Training, Mindset, Performance →
• Training Zones Cheat Sheet →
• Critical Power, Pace & HR Zones — Deep Dive →
• Strength Training For Triathletes →
• Run Strength Essentials — 9 Exercises →
• Sodium, Hydration & Carbs Quick Planner →
• Free Courses Access →

Questions? Reach out at [email protected].

Glossary

Physiology Terms

• LT1 (First Lactate Threshold): The upper edge of truly easy aerobic work. Below this line, lactate stays at baseline. ~85% of CS / 75% of CP for most trained athletes.
• LT2 (Second Lactate Threshold): The line between sustainable and unsustainable effort. Roughly equivalent to CS/CP. ~105% CS.
• CS — Critical Speed: Highest sustainable steady-state running pace (~30–50 minute maximal). The anchor for all run training zones.
• CP — Critical Power: Highest sustainable steady-state cycling power (~30–50 minute maximal). The anchor for all bike training zones.
• D′ (run) / W′ (bike): Finite anaerobic capacity above CS/CP. The "battery" you carry above threshold.
• sVO₂max: The speed or power at maximal oxygen uptake. Sustainable for ~4–8 minutes.
• Aerobic Crossover: The intensity at which fuel use shifts from predominantly fat to predominantly carbohydrate.
• Cardiac Drift: The gradual rise in heart rate over a long effort at constant pace/power. Driven by heat, dehydration, fatigue.

Pacing & Training Terms

• RPE — Rate of Perceived Exertion: Subjective effort scale 1–10. 1 is sitting on the couch; 10 is maximal.
• Zone 2: The upper edge of easy aerobic. Conversational with mild effort. The bulk of useful training time.
• Brick: A workout combining two disciplines back-to-back, typically bike-to-run.
• Taper: The deliberate reduction in volume (with maintained intensity) leading into race day.
• Negative Split: Running the second half of a race faster than the first half.
• Cadence: Pedal strokes per minute on the bike; steps per minute on the run.

Race-Day Terms

• T1: The transition from swim to bike.
• T2: The transition from bike to run.
• Aid Station: On-course location offering water, sports drink, and sometimes food.
• Draft Zone: The legal-distance bubble between bikes in a non-drafting race.
• Reset: A deliberate 60–90 second adjustment in pacing, fueling, and cooling to address a problem mid-race.
• The Final 5K: The decisive last 5K of the half-marathon run. Where 70.3s are won.