Last reviewed: April 2026
Olympic Triathlon Training Plan (12 Weeks, Beginner)
A 12-week Olympic-distance training plan for triathletes who have finished a sprint and want to step up to the 1.5km / 40km / 10km distance. Four phases, 6–8 hours a week, and one brick session per week.
How long does it take to train for an Olympic triathlon?
- • 12 weeks is the standard build from a sprint-distance base.
- • Expect 6–8 hours per week at peak, 4–5 in base and taper weeks.
- • Plan 7 sessions a week: 2 swim, 2 bike, 2 run, 1 brick.
- • Four phases: base → build → peak → taper.
- • Your longest swim is a 1500m time trial; longest bike ~90 min; longest run ~50 min.
Phased overview
| Phase | Swim | Bike | Run | Brick | Focus |
|---|---|---|---|---|---|
| Base (Wks 1–4) | 2 × 30–40 min | 2 × 60–90 min easy | 2 × 30–45 min easy | 1 × 45/15 weekly | Build aerobic base. Keep everything conversational pace. |
| Build (Wks 5–8) | 2 × 45 min (1 interval) | 1 × 60 min easy + 1 × 90 min w/ tempo blocks | 1 × 45 min + 1 × 40 min w/ threshold | 1 × 60/20 weekly | Introduce race pace. Add one hard swim set and one threshold run. |
| Peak (Wks 9–11) | 1 × 45 min + 1 × 1500m time trial or open water | 1 × 90 min + 1 × 75 min race-pace | 1 × 50 min + 1 × 40 min race-pace | 1 × 75/25 (race rehearsal) | Specificity — simulate race pace on bike and run. |
| Taper (Wk 12) | 1 × 30 min + race | 1 × 45 min easy + 1 × 30 min w/ short efforts | 1 × 25 min + race | — | Cut volume by 40%, keep a short sharpener mid-week, sleep. |
Prerequisites
- Swim 750m continuously (or recent sprint finish).
- Cycle 40 km without stopping.
- Run 5 km non-stop.
- 12 weeks of realistic calendar.
- Open water access for at least 4 of the 12 weeks.
Race-day nutrition and pacing
Olympic distance lives in the "long enough to need real nutrition, short enough to go hard" window. Aim for 60–75g of carbs per hour on the bike, keep fluid at 600–750 ml per hour, and pace the bike at 85% to protect the 10k run.
- Build a plan with the Race Nutrition Planner (Olympic).
- Predict splits with the Race Time Calculator.
- Deep-dive on pacing in the triathlon pacing strategy guide.
Try a calculator
- Race Nutrition Planner — Olympic
Build a per-hour fuelling plan for Olympic distance.
- Triathlon Race Time Calculator
Predict your Olympic finish from training paces.
- Hydration Calculator
Set fluid and sodium targets for race day.