Enter any two of distance, time, and pace — the calculator solves for the third instantly. See your speed and predicted finish times for common races. Everything runs entirely in your browser.
Solve For
Enter Distance and Time — pace is calculated for you.
Results
Result
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Distance
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Total Time
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Speed
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Pace / km
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Pace / mile
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Predicted Finish Times
Estimated at your current pace (constant effort). Real race times vary with distance, terrain, and fatigue.