Running pace calculator
Calculate your running pace (min/km), speed and predicted time for 5K, 10K, half marathon and marathon.
How to useWhat's my pace?
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Prediction for other races
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Running pace calculator: what it is for
The calculator turns distance and time into pace (minutes per kilometer), average speed and pace per mile.
It also predicts your time in other races, from 5K to the marathon, with Riegel's formula.
How to use
- Choose the distance or type it in km.
- Enter the time it took.
- See the pace and the prediction for other races.
When to use it
- Plan your race pace.
- Track progress in training.
- Set goals for a half or full marathon.
Frequently asked questions
What is pace?
It is the time it takes you to run 1 km, in minutes and seconds. A 6:00 pace means 6 minutes per kilometer, or 10 km/h (about 9:39 per mile).
How are race time predictions made?
With Riegel's formula, which estimates your time at another distance from a run you did. It works best for similar distances and with proper training.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.