Running Pace Calculator
Converts between running pace (min/km or min/mile), speed (km/h, mph) and finish times for common race distances, and predicts times for other distances from a recent result using the Riegel formula.
Read the full guide to this tool
Results
Notes
- Riegel prediction: T₂ = T₁ × (D₂/D₁)^1.06 — it assumes you are equally trained for both distances, so marathon predictions from a 5k tend to be optimistic.
- This is an educational estimate, not medical advice; consult a professional for decisions about your health.
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