Running and triathlon
Race calculators
Pick a race. Work out your finish time from a pace, or the pace you need to hit a target time.
Running
Triathlon
How it works
Simple maths, honest numbers.
Even pacing
Finish times assume an even pace all the way. It's the fastest way to run most races, and the easiest to stick to.
Other distances
Equivalent times use Riegel's formula, the standard way to compare races: each doubling of distance costs a little more than double the time.
Triathlon
Add your swim pace, bike speed and transitions. Exersio works out each leg, or the run pace you need for your target.
Got a target? Get a plan to hit it.Exersio sets every session's pace from your fitness and guides you on Apple Watch.