Triathlon Plan

AI-built Olympic triathlon plan

Q: How many months from Sprint to Olympic?

Minimum 6-8 months between Sprint and first Olympic. The first 4-8 weeks post-Sprint dedicated to recovery + analysis + reinforced aerobic base. Then 14-16-week Olympic plan. Rushing this timeline significantly increases injury + DNF risk.

Q: Minimum hours of training per week?

7 hours/week minimum for beginner Olympic. 9-11 hours optimal intermediate. 11-13 advanced chasing podium in age group. Below 7 h/week, Olympic is viable only with 16-18 weeks extended plan + conservative goal (finish, not PR).

Q: Typical improvement between first and second Olympic?

With specific prep + 4-6 months between events: 8-15 minutes realistic improvement. Most improvement comes from swimming (technique + open water confidence, 3-5 min) and transitions (3-5 min combined). Bike and run improve 2-5 min each with 16 weeks of structured plan.

Q: How many gels do I need during the race?

For 2:30-3:00 h Olympic: 4-6 gels + isotonic + salt . Typical schema: 1 gel pre-event (15 min before start), 1 in T1 while putting on helmet, 2-3 during bike (every 25-30 min), 0-1 at run start. Total carbs: 200-300 g during race. Critical: test exactly that quantity and brand in prior simulations.

14-18 weeks, 8-12 hours/week. 1,500 m swim + 40 km bike + 10 km run. EntrenAI requires prior Sprint completed, structures all 3 disciplines with long bricks and applies validated peaking for your race date.

Updated September 14, 2026

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What is an Olympic triathlon plan?

Olympic triathlon (1,500 m swim + 40 km bike + 10 km run, 51.5 km total) is the natural second triathlon format after Sprint. Amateur target time: 2:15-3:30 h. Distance doubles Sprint but demand is proportionally higher: swim goes from 12-15 min to 25-35 min, bike from 30-45 min to 60-90 min, run from 22-30 min to 45-65 min.

Fundamental change vs Sprint:

Sustained aerobic capacity: the event lasts 2-3 continuous hours. Metabolic management (fat + glycogen oxidation) is decisive.
Long bricks: 60-75 min bikes followed by 15-25 min runs become key sessions.
Race nutrition: with Sprint you can finish without eating. In Olympic, NO. You need 60-90 g carbs/h during bike + isotonic + salt.
More complex peaking: 2-3 weeks of taper with progressive deload.

Olympic (1.5 km · 40 km · 10 km): how long each leg takes by level

The app estimates your total time from your real paces in each discipline and how long you take in transitions, and splits the plan's hours with it: the discipline where you lose most time is the one that trains most.

Level	Swim	T1	Bike	T2	Run	Total
Finish2:30/100 m · 25 km/h · 6:00/km	37:30	3:00	1:36:00	2:00	1:00:00	3:18:30
Intermediate2:00/100 m · 30 km/h · 5:15/km	30:00	2:00	1:20:00	1:30	52:30	2:46:00
Fast1:40/100 m · 35 km/h · 4:30/km	25:00	1:30	1:08:34	1:00	45:00	2:21:04

Swim
Bike
Run
Transitions

How the plan works

Your AI-generated plan

1. MANDATORY validation.

Sprint triathlon completed in last 12 months (not necessarily fast — finished and validated)
Capacity to swim 1,000 m continuous in pool comfortably
5K running comfortable under 30 min
Capacity to pedal 60 km comfortably in single ride
Pool access + safe 40+ km bike route

Haven't completed a Sprint? EntrenAI rejects Olympic plan and recommends Sprint triathlon plan first (12-14 weeks). It's safety: jumping zero-to-Olympic has very high DNF / injury rate.

2. 4-phase periodization (16 weeks):

Base (4 wk): build aerobic volume in all 3 disciplines. Short bricks (45 min bike + 15 min run).
Build (5 wk): intensity appears — bike sweet spot, run VO2max intervals, long swim sets. Medium bricks.
Specific (5 wk): race-pace simulations + massive brick (60-75 min bike + 25-35 min run).
Taper (2 wk): -50 % volume, keeps 2 short quality sessions/week.

3. Typical weekly structure (8-9 sessions, intermediate):

Monday: Technical swim + drills (1,800-2,500 m)
Tuesday: Bike sweet spot intervals (75-90 min)
Wednesday: Run tempo or VO2max intervals + optional short swim
Thursday: Aerobic swim with long sets (2,000-3,000 m)
Friday: Classic brick (bike 60 min + run 15-20 min)
Saturday: Long ride 90-150 min Z2 + short brick after (10-15 min)
Sunday: Long run 12-16 km Z2 OR full rest (alternating by block)

4. Discipline focus:

Swimming (22 % of time): technique + sustained aerobic capacity. 6×200 m at race pace with short rests sets. Open water mandatory in last 6-8 weeks, minimum 2 sessions.
Cycling (50 %): the dominant Olympic discipline. Sweet spot (88-94 % FTP) in 12-20 min intervals. Long rides up to 2.5 hours.
Running (23 %): long tempo runs (35-45 min) + cruise intervals. Volume 35-50 km/week.

5. Specific bricks. Olympic has longer bricks than Sprint. EntrenAI prescribes:

Weekly classic brick: bike 60-75 min + run 15-25 min. Run starts Z2 (stabilize) and finishes Tempo (~85 % VDOT).
Massive brick in specific block: 75 min bike @ Sweet Spot + 25-35 min run @ Olympic target pace. Key block session.

6. 2-week peaking. Longer than Sprint due to accumulated fatigue magnitude. Wk -2: -30 % volume, keeps quality. Wk -1: -50 % volume, 1-2 short sessions. Last heavy session: 7 days before.

The transition, drawn: what you practise every two weeks

A 3-minute T1 is 2 minutes given away. The plan includes a transition session every two weeks with the bike on a real rack; this is the order you rehearse.

Leave the water walking fast, not running
Wetsuit down to the waist as you move
Helmet BEFORE touching the bike
Run with the bike by the saddle to the mount line

Dismount before the line, never on it
Rack the bike; helmet off ONLY afterwards
Elastic laces: no sitting down
The first 500 m slower than the body asks for

Who is this plan for?

My first Olympic (coming from Sprint). You've completed 1-2 Sprint triathlons. 14-16-week plan. Result: comfortable first Olympic finish, 2:45-3:15 h.
Improving my Olympic (intermediate). You've done 1-2 Olympics in 2:30-3:00 h. 12-14-week plan, 9-11 h/week. Focus on optimizing the 3 disciplines. Result: 2:15-2:45 h.
Sub-2:15 Olympic (advanced). You've done 3+ Olympics in 2:15-2:45. 14-week plan, 10-13 h/week. Double quality session bike + run.

Haven't done Sprint? DON'T start Olympic. Plan rejects explicitly. Correct progression is Sprint → Olympic (with min 6-8 months intermediate adaptation).

Hours per discipline across the 14 weeks

From 7 to 12 hours a week, a deload every fourth week and a taper at the end. Swim, bike and run are split according to their weight in the race and in your profile; "brick" marks the weeks with a bike + run session back to back.

Swim
Bike
Run

Sample plan

Your first weeks, in detail

Week 8

Intermediate build — load block, first massive brick

Day	Session type	Detail	Duration
Monday - Technical swim	Drills + aerobic	300 m easy warm-up + 200 m drills. Main set: 8×100 m freestyle at comfortable pace + 4×200 m freestyle at Olympic race pace (~1:50/100 m), 30 seconds rest. 200 m cool-down. Total ~2,300 m.	65 min
Tuesday - Bike sweet spot intervals	Bike quality	15 min Z2 warm-up. 3×15 min @ 88-92 % FTP (Sweet Spot) with 5 min Z1 between sets. 10 min cool-down.	85 min
Wednesday - Run tempo	Cardio quality	15 min warm-up + 25 min Tempo (~85 % VDOT) + 10 min cool-down. ~9 km total.	55 min
Thursday - Aerobic swim	Swim volume	300 m warm-up + 200 m drills. Main set: 6×400 m at controlled comfortable pace, 30 seconds rest between sets. 200 m cool-down. Total ~3,100 m.	75 min
Friday - Classic brick	Bike + run consecutive	Bike 60 min Z2-Sweet Spot + fast transition + Run 18 min with first 5 min Z2 (stabilize) + last 13 min @ Tempo. Total ~85 min.	85 min
Saturday - Long ride + short brick	Volume + simulation	Bike 2 hours Z2 with 2×20 min @ Sweet Spot + transition + Run 12 min Z2-Z3. Hydration every 20 min, 2-3 gels. Key session of the week.	150 min total
Sunday - Long run or rest	Recovery or volume	12 km Z2 at 5:30/km OR full rest depending on accumulated fatigue.	0-75 min

Week 13

Advanced specific — massive brick simulation 75 % distance

Day	Session type	Detail	Duration
Monday - Quality swim	Long sets at race pace	400 m warm-up + 200 m drills. Main set: 3×500 m at Olympic pace (~1:45/100 m), 60 seconds rest. 200 m cool-down. Total ~2,300 m.	60 min
Tuesday - Bike threshold	Cycling quality	15 min warm-up + 2×20 min @ 95 % FTP + 8 min Z1 between sets + 10 min cool-down.	85 min
Wednesday - Run VO2max intervals	Cardio quality	15 min warm-up + 6×800 m at Interval pace (~95 % VDOT) with 200 m jog + 10 min cool-down. ~12 km.	65 min
Thursday - Massive brick simulation	Specific block key session	Bike 75 min Z2-Sweet Spot (alternate 15 min Z2 + 10 min Sweet Spot) + fast transition + Run 25 min @ Olympic race pace (~80 % VDOT). Focus: consistent pace from km 1, no first 200 m blast. Hydration + 2 gels during bike.	115 min total
Friday - Recovery	Easy	30 min Z2 very easy (bike or jog) or rest.	0-30 min
Saturday - Open water swim + bike	Open water specific	Morning: Open water 1,500 m + 750 m at race pace (with safe partner/group). Afternoon: 60 min bike Z2.	120 min total
Sunday - Long run with surges	Volume + intensity	16 km Z2 at 5:00/km with last 5 km at 4:30/km (Tempo).	85 min

These examples are real extracts from the EntrenAI planning engine. Your personal plan adjusts to your level, equipment and availability.

Equipment needed

EntrenAI automatically substitutes any exercise if you don’t have the gear.

Pool access (25/50 m) + goggles + swimsuit + cap
Road or triathlon bike with clip-on aerobars (recommended in Olympic, not mandatory)
Aero helmet (15-30 W saving useful in 40 km, optional)
Lightweight running shoes + cycling shoes with cleats
Multisport waterproof watch (Garmin Forerunner 945+/955, COROS Apex 2 Pro, Suunto Vertical)
Chest HR strap preferably (wrist HR loses precision at high intensity)
Trisuit or technical apparel tested in at least 3 simulations
Bottles (min 2 for bike), lock laces
Gels + sports drinks (test in at least 4-5 long rides), salt if hot
For open water: wetsuit (5-3 mm depending on temperature), mirror-tinted goggles if strong sun

Common mistakes

What most people get wrong (and how to avoid it)

1
Skipping the prior Sprint
Olympic is 2× the Sprint distance but muscular and aerobic demand is 2.5-3× higher. Without prior Sprint, you've never experienced the metabolic bike → run shift with pre-loaded legs at significant distance. DNF rate in Olympic without prior Sprint: >25 % vs ~5-8 % with Sprint completed.
2
Not testing open water until late
Swimming 1,500 m in pool ≠ swimming 1,500 m in lake/sea. Visibility, waves, contact with other swimmers, wetsuit — everything changes. The last 6-8 weeks, minimum 2 open water sessions/week (with safety: outdoor pool or supervised lake). Race day should NOT be your first open water contact at Olympic distance.
3
Starting bike too hard in T1
You exit 25-35 min of swimming with high HR + adrenaline. You attack the bike at 90 % FTP. Result: you blow up at km 25 of 40, the last 15 km are torture + a fatal run. Strategy: first 10 km bike at 75-80 % FTP, rest at 85-90 % if feeling good.
4
Underestimating race nutrition
In Sprint you can finish on 1 gel total. In Olympic you need **60-90 g carbs/h during bike** (3-4 gels) + isotonic every 15-20 min + salt. Without it, the last 15 km of bike + 10 km run are guaranteed glycogen depletion — the classic 'bonk'. Testing exact nutrition in prior simulations is mandatory.
5
Excessive running volume
Triathletes coming from running maintain 60+ km/week on Olympic plan. Excessive: 35-50 km/week is optimal. More running volume compromises bike sessions (Hickson muscular interference) and increases injury risk. Correct distribution: bike-dominant (50 %), moderate run (23 %), moderate swim (22 %).
6
Not training transitions at real speed
T1 (swim → bike) and T2 (bike → run) cost 2-4 minutes each in unprepared amateurs. Improvable to 60-90 seconds each with 4-6 specific sessions in last 6 weeks. Details: lock laces, fast-drying trisuit, helmet with quick clip, gels open on frame.
7
Skipping the run portion of the massive brick
The massive brick (75 min bike + 25-35 min run) is the key specific block session. Some only execute the bike portion because 'I train running separately'. Wrong: the brick run trains specifically running fatigued at target pace. Without it, the first 2 km of the race run will be uncontrolled and the last 5 km very hard.
8
Insufficient pre-swim warm-up
Starting the swim 'cold' = first 200 m very hard (HR spikes, drowning sensation). Minimum 10-15 min warm-up before start: 5 min shoulder + lat dry activation + 5-10 min in water if possible (50-100 m progressive). Without it, first 300 m of the race are panic for many amateurs.

Other Triathlon plan variants

Back to the general Triathlon plan

Frequently asked questions

Minimum 6-8 months between Sprint and first Olympic. The first 4-8 weeks post-Sprint dedicated to recovery + analysis + reinforced aerobic base. Then 14-16-week Olympic plan. Rushing this timeline significantly increases injury + DNF risk.

7 hours/week minimum for beginner Olympic. 9-11 hours optimal intermediate. 11-13 advanced chasing podium in age group. Below 7 h/week, Olympic is viable only with 16-18 weeks extended plan + conservative goal (finish, not PR).

Road with clip-on aerobars is viable. TT (triathlon) bike saves 25-40 W at Olympic speed = 4-7 minutes on a 40 km bike. Will you race 2+ Olympics/year or 70.3 in future? Consider TT. Just 1-2 Olympics? Road with aerobars is enough.

Pre-event: 7-10 days of heat acclimation (thermal clothing + 20-30 min sauna × 4-6 sessions). Pre-race hydration: 500 ml water + salt 2 hours before. During hot race: hydration every 10-15 min on bike, sodium 700-1,000 mg/h. Diluted gels (with water) to not overload digestion.

No. Relay: each member does 1 discipline (swim-bike-run). Very different demand — you're a specialist in your segment, no transitions. EntrenAI Olympic plan is for individual. For relay, your discipline-specific plan (swim / cycling / running) is more appropriate.

With specific prep + 4-6 months between events: 8-15 minutes realistic improvement. Most improvement comes from swimming (technique + open water confidence, 3-5 min) and transitions (3-5 min combined). Bike and run improve 2-5 min each with 16 weeks of structured plan.

For 2:30-3:00 h Olympic: 4-6 gels + isotonic + salt. Typical schema: 1 gel pre-event (15 min before start), 1 in T1 while putting on helmet, 2-3 during bike (every 25-30 min), 0-1 at run start. Total carbs: 200-300 g during race. Critical: test exactly that quantity and brand in prior simulations.

Olympic has no weight categories. You compete against everyone in your age group. Optimal weight strategy: ~5 % below your 'normal gym' weight (better power-to-weight for climbing and aerodynamics). DON'T cut weight aggressively — you lose power and increase dehydration risk.