Triathlon Plan

AI-built beginner triathlon plan

Q: How long will my first Sprint take?

Realistic 1h45-2h30 . Experienced amateur triathlete: 1h10-1h30. Don't compare — your goal is completing first triathlon feeling proud. Competitive time comes after 3-4 triathlons.

Q: How much does equipment cost?

Minimum viable : used basic bike (€300-500), helmet (€60), running shoes (€80), swimsuit + goggles (€40), watch with HR (€150). Total: €600-900. Intermediate equipment : new bike (€1,500-2,500) + extras = €2,500-4,000. You DON'T need expensive equipment for Sprint.

Q: Road bike or gravel?

Sprint on asphalt road : road bike slightly faster. Mixed/gravel Sprint : gravel bike better. For beginner, either is sufficient. Urban/MTB bike also viable (slower but completes).

Q: When move to Olympic?

After comfortably completing 2-3 Sprint triathlons, Olympic plan (1.5 + 40 + 10 km, 14-16-week plan) is the natural progression. Olympic requires almost double volume and more sophisticated mid-race nutrition.

16-18 weeks to complete your first Sprint triathlon (750m + 20km + 5km) without significant prior experience in any discipline. EntrenAI builds base in all 3 + practices T1/T2 transitions + brick simulation before event. To complete, not to win.

Updated September 14, 2026

4.8/5 average rating

100+ athletes

thousands of plans generated

What is a beginner triathlon plan?

The beginner triathlon plan is for someone with NO significant experience in swimming, cycling or running, who wants to complete their first Sprint distance triathlon (750 m swim + 20 km bike + 5 km run).

It's an honest plan: do NOT expect to finish with competitive time. The goal is crossing the finish line uninjured, feeling proud. It's 16-18 weeks because you have to build 3 sports from scratch (a short plan would be dangerous).

The plan resolves beginner challenges:

Swimming: start with fragmented 200m → reach 750m continuous in calm water. Plan includes essential technical drills.
Cycling: bike confidence on road + sustainable 20 km at conservative pace. Learning to eat/drink rolling.
Running: walk-jog progression → 5 km continuous at conversational pace. Basic running technique to avoid injury.
Transitions (T1 + T2): 30-90 seconds each. Practice mandatory — chaotic transition kills first triathlon morale.
Brick training: bike-run consecutive sessions to acclimate to heavy legs after bike.

Plan pillars:

Volume 80 % Z1-Z2 (Seiler 2010 polarized adapted to beginner)
Minimum frequency each discipline: swimming 2×/wk, bike 2×/wk, running 2×/wk
NO intense HIIT during first 12 wk (interference + injury)
Weekly brick from wk 8 (15-30 min run after easy bike)

Your first sprint (750 m · 20 km · 5 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	18:45	3:00	48:00	2:00	30:00	1:41:45
Intermediate2:00/100 m · 30 km/h · 5:15/km	15:00	2:00	40:00	1:30	26:15	1:24:45
Fast1:40/100 m · 35 km/h · 4:30/km	12:30	1:30	34:17	1:00	22:30	1:11:47

Swim
Bike
Run
Transitions

How the plan works

Your AI-generated plan

1. Initial validation.

Cardiovascular health without restrictions (consult doctor if >40 years or risk factors)
Ability to swim at least 25-50m without stopping (not absolute zero swimmer)
Bike in condition (serviced, tires, brakes)
Minimum 6 sessions/wk commitment (5-8h/wk)
Pool availability 2×/wk

Don't know how to swim AT ALL? Dedicate 4-6 wk to beginner swim class BEFORE starting triathlon plan.

2. Typical weekly structure:

Monday: Swim 1 (technique + soft volume 800-1,200 m)
Tuesday: Easy run 30-40 min Z2
Wednesday: Bike 60-90 min Z2
Thursday: Swim 2 (intervals + volume 1,000-1,500 m) + optional core strength 20 min
Friday: Full rest
Saturday: Long ride 90-120 min Z2 + brick run 15 min Z2 (from wk 8)
Sunday: Long run 30-50 min Z2

Total: 5-9 hours/wk.

3. Progression by discipline:

Swimming (wk 1 → 18):

Wk 1-4: 200m fragmented (2×100m with pause) → 400m continuous
Wk 5-8: 500-600m continuous + 4×100m intervals
Wk 9-12: 800m continuous + 6×100m
Wk 13-16: 1,000m continuous + 750m simulation
Wk 17-18: Consolidated 750m race pace

Bike (wk 1 → 18):

Wk 1-4: 60 min Z2 + drops handlebar acclimation
Wk 5-8: 90 min Z2 + gear changes
Wk 9-12: 90-120 min Z2 + sweet spot 2×10 min
Wk 13-16: 120 min Z2 + 20 km race pace simulation
Wk 17-18: Tapering, maintenance

Running (wk 1 → 18):

Wk 1-4: walk-jog 30-40 min (3:1 walk:jog → 1:3)
Wk 5-8: 30-40 min continuous Z2 jog
Wk 9-12: 35-45 min Z2 + 1× short repeats
Wk 13-16: 40-50 min long run + 5 km race pace simulation
Wk 17-18: Tapering

4. Transitions (wk 12+):

T1 (swim → bike): exit water, remove swimsuit (if you came with) or transition suit, helmet + shoes + mount and go. Practice 5×simulated T1 in 1 session.
T2 (bike → run): dismount bike, helmet off, change shoes (if you have specific), run out. Practice 5×T2.

5. Brick training (wk 8+):

Saturday long ride + immediate 15-20 min run. First times will feel like jellyfish in legs. After 4-6 bricks, improves.

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?

25-50 year old without significant experience, wanting to complete Sprint. 16-18-week plan, 6 sessions/wk. Target time: 1h45-2h30 by condition.
Single-sport amateur athlete (runner or cyclist) trying triathlon. 14-16-week plan if aerobic base is reasonable. Heavy focus on deficient discipline.
Parent wanting realistic athletic challenge. 16-18-week plan is viable with 6h/wk (compatible with work + moderate family life).

Don't know how to swim AT ALL (zero)? Learn swimming first (4-6 wk) before plan. Want to complete Olympic (1.5 + 40 + 10)? Olympic plan is clearly different and requires more volume.

Hours per discipline across the 12 weeks

From 5 to 8 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

Mid-build — first brick run, 600m continuous swim

Day	Session type	Detail	Duration
Monday - Swim 1	Technique + soft volume	- Warm-up 200m easy - 4×100m drill (catch-up, 3-3-3, pull buoy, normal) 30s rest - Main set: 600m continuous at sustained easy pace - 200m easy cool-down	45 min
Tuesday - Easy run	Progressive Z2	- 5 min walk - 35 min Z2 conversational jog (HR 65-75 % HRmax) - 5 min walk cool-down	45 min
Wednesday - Z2 bike	Aerobic volume	- 80 min Z2 conversational (60-75 % estimated FTP) - 1 water bottle + bar at midpoint - Practice gear changes on small hills	80 min
Thursday - Swim 2 + strength	Intervals + core	Swim (45 min): - Warm-up 200m easy - 6×100m intervals at threshold pace (30s rest) - 200m cool-down Core strength (15 min): - Plank 3×60s - Side plank 3×30s/side - Bird-dog 3×10/side - Push-ups 3×10	60 min total
Friday - Full rest	Recovery	Full rest. Optional gentle stretching 10-15 min.	0-15 min
Saturday - Long ride + first brick	Bike endurance + brief run	- 90 min Z2 bike (familiar, non-technical terrain) - Immediate brick run 15 min Z2 — heavy legs sensation is normal, keep conservative pace - Hydration + bar at bike midpoint	105 min
Sunday - Long run	Sustained Z2	- 5 min walk - 40 min progressive Z2 jog (first 20 min HR 65-70 %, last 20 HR 70-75 %) - 5 min walk	50 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 (minimum 2×/wk, 25 m sufficient)
Road, urban or gravel bike (sufficient for Sprint)
Mandatory helmet + lights + bell (for outdoor training)
Running shoes appropriate for your weight
Competition swimsuit + swim goggles + silicone cap
Chest HR strap or watch with HR (Garmin Forerunner, Polar) — essential for zones
Stopwatch (can be same as HR monitor)
Pull buoy + kickboard (swim drills)
Season-appropriate apparel (windbreaker for bike, breathable clothing)
Transition backpack or sport bag for event

Common mistakes

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

1
Skipping weakest discipline
Universal beginner mistake: 4 running sessions (because they're good at it) and 1 swimming (because it's hard). Result: triathlon day, the 750 m is the nightmare. Weakest discipline needs MORE sessions, not less. EntrenAI prioritizes the weak.
2
Starting plan without knowing how to swim
Sprint triathlon 750 m demands at least knowing how to swim 50-100 m without stopping and breathe laterally. If you literally don't know how to swim, dedicate 4-6 wk swim classes with coach BEFORE plan. Learning swimming during triathlon plan is very slow.
3
Skipping transitions (T1/T2)
Chaotic T1 + T2 can cost 5-10 minutes = more than entire run. Practicing transitions is MANDATORY from wk 12. Minimum 5×T1 + 5×T2 in specific sessions. EntrenAI includes them automatically.
4
Not practicing open water if event is in lake/sea
Pool swimming is very different from open water (no line, waves, cold, crowd). Event is lake/sea? Minimum 2-3 open water sessions in last 4 wk. Without this, first minute of triathlon can be panic.
5
Inappropriate or new equipment on event day
New swimsuit, different goggles, new shoes on event day = guaranteed discomfort or blisters. All equipment to use on race day must be tested in minimum 4 prior sessions. No first-time use.
6
Pacing too hard first 200m swim
Going from initial overhead to panic makes many beginners leave at 90 % swimming effort. Result: arms collapse at 300m. Correct pacing: leave 60-70 % effort, find rhythm in first 100m, sustain.
7
Neglecting nutrition and hydration during bike
Sprint 20 km bike is ~40-60 min. You need: 1 water bottle (500 ml) + 1 bar or gel (30 g carb) during. Without nutrition, legs in T2 are stone. Practice nutrition from wk 6 long ride.
8
Expecting competitive time
Your first Sprint will be completed in 1h45-2h30. Do NOT compare with experienced triathletes (1h05-1h30). Your goal: cross finish line uninjured, feeling proud. Competitive time comes in 4-6+ triathlons.

Other Triathlon plan variants

Back to the general Triathlon plan

Frequently asked questions

Not directly. Recommended: 4-6 weeks swim classes with coach to build foundation (50-100m without stopping, basic lateral breathing) BEFORE starting triathlon plan. Learning swimming during plan is very slow + causes frustration.

Realistic 1h45-2h30. Experienced amateur triathlete: 1h10-1h30. Don't compare — your goal is completing first triathlon feeling proud. Competitive time comes after 3-4 triathlons.

Depends: event in lake/sea with water <22°C, wetsuit MANDATORY + buoyancy advantage. Pool or water >22°C, prohibited or optional per regulations. For your first triathlon in cool water, wetsuit is highly recommended (much easier to float).

Minimum viable: used basic bike (€300-500), helmet (€60), running shoes (€80), swimsuit + goggles (€40), watch with HR (€150). Total: €600-900. Intermediate equipment: new bike (€1,500-2,500) + extras = €2,500-4,000. You DON'T need expensive equipment for Sprint.

Sprint on asphalt road: road bike slightly faster. Mixed/gravel Sprint: gravel bike better. For beginner, either is sufficient. Urban/MTB bike also viable (slower but completes).

Pre (3h before): 60-80 g oats + banana + honey + coffee. 30 min before: 30 g carb bar. During: 1 gel + water bottle during bike. Post (30 min after): meal with protein + carb. Abundant hydration entire previous day.

Amateur triathletes have 5-10 % DNF (did not finish) rate in first Sprint. It's not shame — it's information. Typical cause: swimming panic, injury, bike mechanical issue. You return to plan, adjust, try again. Many amateur stars failed first triathlon.

After comfortably completing 2-3 Sprint triathlons, Olympic plan (1.5 + 40 + 10 km, 14-16-week plan) is the natural progression. Olympic requires almost double volume and more sophisticated mid-race nutrition.