Triathlon Race Time Calculator
Calculate your total triathlon finish time from swim, bike, and run paces plus transition times.
Works for sprint, Olympic, 70.3, and Ironman distances.
Estimated Finish Time
A triathlon finish time is the sum of three discipline times plus two transitions (T1: swim-to-bike, T2: bike-to-run).
Total time = Swim time + T1 + Bike time + T2 + Run time
Standard triathlon distances:
| Event | Swim | Bike | Run |
|---|---|---|---|
| Super Sprint | 400 m | 10 km | 2.5 km |
| Sprint | 750 m | 20 km | 5 km |
| Olympic | 1,500 m | 40 km | 10 km |
| 70.3 (Half Ironman) | 1,900 m | 90 km | 21.1 km |
| Full Ironman | 3,800 m | 180 km | 42.2 km |
Typical finish times by athlete level (Olympic distance):
- Beginner: 2:30–3:00
- Intermediate club racer: 2:00–2:30
- Competitive age grouper: 1:50–2:10
- Elite age grouper: 1:45–2:00
- Elite pro: under 1:45
Pacing tips:
- Swim: Enter paced conservatively — overexertion in the swim elevates heart rate and affects the bike. Aim for 70–80% effort.
- Bike: The longest discipline in time. Common mistake is going too hard and ruining the run. Many coaches recommend keeping bike effort at 70–75% FTP.
- Run: The hardest discipline to pace because legs are already fatigued. Expect your run pace to be 10–20 seconds per km slower than an equivalent standalone 10K.
- Transitions: For sprint and Olympic, aim for T1 under 2 minutes, T2 under 1 minute. For Ironman, 5–10 minutes each is normal.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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