Free Pace Calculator
Running pace, time & distance.
5:00 /km
50:00 for 10 km · 12.00 km/h
25:00
5K
1:45:29
Half marathon
3:30:59
Marathon
| Split | Elapsed |
|---|---|
| 1 km | 5:00 |
| 2 km | 10:00 |
| 3 km | 15:00 |
| 5 km | 25:00 |
| 10 km | 50:00 |
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How to use the Pace Calculator
- 1Enter two of: distance, time, pace.
- 2See splits table.
Features
- 5K/10K/HM/marathon presets
- Split table
- Pace per km & mile
Frequently Asked Questions
How are race predictions calculated?
Riegel’s formula: T2 = T1 × (D2/D1)^1.06 — a good estimate for similar distances.
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About the Pace Calculator
Calculate running pace per km/mile, finish times and race predictions. The Pace Calculator runs entirely in your browser — your data is processed locally and never uploaded to a server. Explore more Calculators tools or browse all free online tools.