Running Pace Calculator
From distance and time: pace per km, average speed, and projected times for 5K, 10K, half-marathon and marathon.
Result
Race Time Projections
| Distance | km | Finish Time |
|---|
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
This calculator converts a distance and a finish time into your running pace per kilometer (or mile) and your average speed, using the basic relationship between distance, time and speed. Beyond the raw pace figure, it projects that same pace onto standard race distances — 5K, 10K, half-marathon and marathon — so you can see what a training pace would translate to over a full race.
Runners use it both after a workout, to log how fast a given run actually was, and before a race, to plan a target pace that would produce a specific finish time. Coaches and running apps rely on the same math to build pacing strategies, since holding a steady pace per kilometer is usually more effective than running by feel alone, especially over longer distances where early over-pacing leads to a slower finish.
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