Running Pace & Race Predictor
Convert pace ↔ time ↔ distance and predict your race times.
Fill in any two of the three fields and the calculator solves the third. The most-recently-edited two are kept fixed.
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Enter two values to see your pace ✨
Race finish times at your current pace (), plus an even-pace split table.
Even-pace splits
| Split | Elapsed | |
|---|---|---|
| Set a pace in the Calculator tab first. | ||
Enter one recent race result and we'll predict the rest using Riegel's formula T₂ = T₁ × (D₂ / D₁)^1.06.
Your known result
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