Running Race Time Predictor Calculator
Predict your race time at a different distance from a known finishing time.
m
m
Result
52:07
Predicted time: 52:07
Result in all units
Step-by-step solution
T₂ = T₁·(D₂/D₁)^1,06
What Is Race Time Prediction?
Race time prediction estimates your performance at one distance based on your time at another. It is based on the Riegel formula.
How is it calculated?
How Is It Calculated?
T₂ = T₁ × (D₂ ÷ D₁)^1,06
- Enter the known distance and time, and the target distance.
Pace naturally slows a little over longer distances.
Frequently Asked Questions
How reliable is the prediction?
It is accurate at a similar training level; endurance and distance-specific preparation can change the result.