How to use the Running Pace Calculator
- Choose what you want to calculate.
- Pick a race distance or type your own.
- Enter your time or pace and read the result, including split times.
- Optional: plan different first- and second-half times while keeping the same finish goal.
Pace formulas
Pace = time ÷ distance. Time = pace × distance. Distance = time ÷ pace. One mile is 1.609344 km, so a 5:00/km pace equals about 8:03/mile.
Typical race times
| Pace /km | 5K | 10K | Half | Marathon |
|---|---|---|---|---|
| 4:00 | 0:20:00 | 0:40:00 | 1:24:23 | 2:48:47 |
| 4:30 | 0:22:30 | 0:45:00 | 1:34:56 | 3:09:53 |
| 5:00 | 0:25:00 | 0:50:00 | 1:45:29 | 3:30:59 |
| 5:30 | 0:27:30 | 0:55:00 | 1:56:02 | 3:52:04 |
| 6:00 | 0:30:00 | 1:00:00 | 2:06:35 | 4:13:10 |
| 6:30 | 0:32:30 | 1:05:00 | 2:17:08 | 4:34:16 |
| 7:00 | 0:35:00 | 1:10:00 | 2:27:41 | 4:55:22 |
Frequently asked questions
What is a good 5K time?
For recreational runners, 25–35 minutes is common. Under 20 minutes is fast for amateurs.
How do I convert min/km to min/mile?
Multiply your per-km pace by 1.609. For example, 6:00/km × 1.609 = 9:39/mile.