Race Predictor
Check your running race result for a given distance.
Your predicted race time will be displayed here.
How to Predict Your Race Time
This calculator uses a formula developed by Peter Riegel, which allows you to predict your race time for one distance based on your performance in another. The formula is: T2 = T1 × (D2 / D1)1.06, where T1 and D1 are your time and distance from a recent race, and T2 and D2 are the predicted time and distance for the new race.