Running · Metric and US units
Running Pace Calculator
Turn any run distance and finish time into pace per kilometer, pace per mile, average speed and equivalent race finish times.
Your run
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Pace and speed
Pace per kilometer—
Pace per mile—
Average speed—
Average speed—
| Distance | Same-pace time |
|---|---|
| 5K | — |
| 10K | — |
| Half marathon | — |
| Marathon | — |
How the pace calculation works
Average pace is total elapsed time divided by distance. Speed is distance divided by elapsed time. The equivalent race times keep exactly the same average pace over 5 km, 10 km, 21.0975 km and 42.195 km.
These are mathematical same-pace estimates, not race predictions. Terrain, weather, stops, fatigue and training can change actual results—especially over a longer distance. Use the values for planning rather than medical or coaching advice.