Running Pace Calculator
Work out your running pace, predicted finish time, or distance covered. Enter any two values and the calculator will work out the third. Switch between kilometres and miles, and view your per-km or per-mile splits.
How to Calculate Your Running Pace
Running pace is the time it takes you to cover a set distance, usually expressed as minutes per kilometre or minutes per mile. Knowing your pace helps you plan training sessions, set race targets, and track your improvement over time.
The formula is simple:
Pace = Total Time ÷ Distance
For example, if you ran 10 km in 50 minutes, your pace is 50 ÷ 10 = 5:00 per km. To find your finish time, multiply your pace by the distance. To find the distance you covered, divide your total time by your pace.
Our calculator handles the maths for you. Just fill in any two of the three fields — distance, time, or pace — and the third is calculated automatically. You can also switch between kilometres and miles at any time, and your values will convert instantly.
Common Race Distances
These are the standard race distances used in the UK and internationally. Use the quick-select buttons in the calculator above to fill in any of these distances instantly.
| Race | Kilometres | Miles |
|---|---|---|
| 5K | 5.00 km | 3.11 mi |
| 10K | 10.00 km | 6.21 mi |
| Half Marathon | 21.10 km | 13.11 mi |
| Marathon | 42.20 km | 26.22 mi |
Pace Chart: Finish Times by Pace
This table shows predicted finish times for common race distances at different paces. Find your target pace on the left to see what finish time you can expect.
| Pace/km | 5K | 10K | Half Marathon | Marathon |
|---|---|---|---|---|
| 4:00 | 20:00 | 40:00 | 1:24:23 | 2:48:47 |
| 4:30 | 22:30 | 45:00 | 1:34:56 | 3:09:53 |
| 5:00 | 25:00 | 50:00 | 1:45:29 | 3:30:59 |
| 5:30 | 27:30 | 55:00 | 1:56:02 | 3:52:04 |
| 6:00 | 30:00 | 1:00:00 | 2:06:35 | 4:13:10 |
| 6:30 | 32:30 | 1:05:00 | 2:17:08 | 4:34:16 |
| 7:00 | 35:00 | 1:10:00 | 2:27:41 | 4:55:22 |
| 7:30 | 37:30 | 1:15:00 | 2:38:14 | 5:16:27 |
| 8:00 | 40:00 | 1:20:00 | 2:48:47 | 5:37:33 |