Predict your triathlon finish time at any distance — Sprint, Olympic, 70.3 or full Ironman (140.6). Enter your swim, bike and run paces and see your projected total — and every split. Free, instant, fully editable.
Your finish time is just the sum of three races and two transitions. This calculator turns each pace into a split for the official distances:
| Distance | Swim | Bike | Run |
|---|---|---|---|
| Sprint | 750 m | 20 km / 12.4 mi | 5 km / 3.1 mi |
| Olympic | 1.5 km | 40 km / 24.8 mi | 10 km / 6.2 mi |
| 70.3 (Half) | 1.9 km | 90 km / 56 mi | 21.1 km / 13.1 mi |
| 140.6 (Full) | 3.8 km | 180 km / 112 mi | 42.2 km / 26.2 mi |
A planning estimate, not a guarantee — conditions, nutrition and pacing change everything. Train and race within your limits.
Estimate a realistic swim pace, bike speed and run pace you can sustain across the whole day (not your fresh, standalone bests), add your transitions, and this calculator sums them into a projected 140.6 or 70.3 finish.
Many first-timers finish a full Ironman in 12–15 hours (the overall cutoff is 17:00) and a 70.3 in 6–8 hours. Set the paces above to your honest training numbers to see where you'd land.
Fatigue compounds across the day — most athletes ride and especially run slower than their fresh paces. Aim conservative on the bike so you can hold your run, and pad your transitions.