Running Calculator

Work out pace, time, or distance from the other two — and predict race times for standard distances from a recent result.

Units

pace, time & distance solving for time

Solve for

Distance (km)

Pace — min / km Pace — sec

Time — h Time — m Time — s

Time —

Average speed —

race time predictor riegel formula

Known distance (km) Known time — h Known time — m Known time — s

5K —

10K —

Half marathon —

Marathon —