How race times are predicted
Predictions use Peter Riegel’s formula: T2 = T1 × (D2 ÷ D1)1.06. It assumes you train properly for the longer distance, so marathon predictions are often optimistic for newer runners.
Common pace chart
| Pace per mile | 5K | 10K | Half marathon | Marathon |
|---|---|---|---|---|
| 8:00 | 24:51 | 49:42 | 1:44:52 | 3:29:45 |
| 9:00 | 27:58 | 55:55 | 1:57:59 | 3:55:58 |
| 10:00 | 31:04 | 1:02:08 | 2:11:06 | 4:22:11 |
| 11:00 | 34:11 | 1:08:21 | 2:24:12 | 4:48:24 |
| 12:00 | 37:17 | 1:14:34 | 2:37:19 | 5:14:38 |
See how many calories your run burned with the calories burned calculator.
Running Pace Calculator FAQs
What is a good 5K time?
Many recreational runners finish a 5K in about 25–40 minutes. Any finish is a good start!
How do I enter time?
Use mm:ss (e.g. 28:30) or h:mm:ss (e.g. 1:58:00).
Is my information saved or sent anywhere?
No. Everything is calculated in your browser and nothing is sent to a server.