How do I calculate my 70.3 finish time?

Enter your swim pace, bike power or speed, and a recent run time. The calculator predicts each segment — including the slowdown of running off the bike and the cost of hills, wind and heat — and returns three finish-time bands: Aggressive, Realistic and Safe Finish.

What is a typical first 70.3 finish time?

Many first-timers finish a 70.3 somewhere around 6 to 7.5 hours, but it depends heavily on the course and conditions. The honest answer is a range, which is exactly what this calculator gives you.

70.3 Time Calculator

70.3 finish-time calculator

Most calculators just add swim + bike + run. This one models the part that actually decides your day — the run off the bike — and shows your finish as three honest pacing bands.

1 · Your race

Distance

Pick a race (optional) Auto-fills course elevation, temp and wetsuit.

Race date (optional)

Your goal

2 · Swim

Sustainable pace per 100m (mm:ss) The pace you could hold for a long swim. Blank = we estimate (wider range).

Open-water swim Wetsuit

3 · Bike

FTP (watts, optional)

Body weight (kg)

…or flat long-ride speed (km/h) We use power if FTP + weight are given, otherwise speed.

4 · Run

Any recent time helps — fill whichever you have.

10K

Half

Marathon

Run durability — long runs & bricks: 3/5

5 · Course & day

Bike climbing (m)

Wind

Temp (°C)

First-timer at this distance

Weekly training hours

Saved to this device only. No account, no upload.