How do I calculate pace per kilometre?
Divide total time by distance in kilometres. Running 10 km in 50 minutes gives 5:00/km. Multiply pace by distance to calculate finish time.
Running pace calculator
Calculate pace, finish time or speed in kilometres or miles. Results update instantly.
Results
Total time
0:50:00
Pace / km
5:00 /km
Pace / mile
8:03 /mi
Speed
12 km/h
Create your plan to run at 5:00/km
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Race-distance splits at this pace
- 5K0:25:00
- 10K0:50:00
- 21K1:45:29
- 42K3:30:59
Kilometre splits
| Distance (km) | Split time | Elapsed time |
|---|---|---|
| 1 | 5:00 | 5:00 |
| 2 | 5:00 | 10:00 |
| 3 | 5:00 | 15:00 |
| 4 | 5:00 | 20:00 |
| 5 | 5:00 | 25:00 |
| 6 | 5:00 | 30:00 |
| 7 | 5:00 | 35:00 |
| 8 | 5:00 | 40:00 |
| 9 | 5:00 | 45:00 |
| 10 | 5:00 | 50:00 |
How to use this
- Choose kilometres or miles, then finish time, pace or speed. Pace = time ÷ distance.
- Use 5K, 10K, 21K or 42K. The last two use the full race distances: 21.0975 and 42.195 km.
- Enter time as HH:MM:SS or MM:SS and pace as M:SS. At 5:00/km, 10 km takes 50:00; speed is 12 km/h.
Pace chart: 5K, 10K, half marathon and marathon
Finish times at a constant pace. These are conversions, not predictions of your fitness.
| Pace / km | Pace / mile | Speed | Total time |
|---|---|---|---|
| 3:00/km | 4:50/mi | 20 km/h | 0:15:00 |
| 3:30/km | 5:38/mi | 17.14 km/h | 0:17:30 |
| 4:00/km | 6:26/mi | 15 km/h | 0:20:00 |
| 4:30/km | 7:15/mi | 13.33 km/h | 0:22:30 |
| 5:00/km | 8:03/mi | 12 km/h | 0:25:00 |
| 5:30/km | 8:51/mi | 10.91 km/h | 0:27:30 |
| 6:00/km | 9:39/mi | 10 km/h | 0:30:00 |
| 6:30/km | 10:28/mi | 9.23 km/h | 0:32:30 |
| 7:00/km | 11:16/mi | 8.57 km/h | 0:35:00 |
| 7:30/km | 12:04/mi | 8 km/h | 0:37:30 |
| 8:00/km | 12:52/mi | 7.5 km/h | 0:40:00 |
| Pace / km | Pace / mile | Speed | Total time |
|---|---|---|---|
| 3:00/km | 4:50/mi | 20 km/h | 0:30:00 |
| 3:30/km | 5:38/mi | 17.14 km/h | 0:35:00 |
| 4:00/km | 6:26/mi | 15 km/h | 0:40:00 |
| 4:30/km | 7:15/mi | 13.33 km/h | 0:45:00 |
| 5:00/km | 8:03/mi | 12 km/h | 0:50:00 |
| 5:30/km | 8:51/mi | 10.91 km/h | 0:55:00 |
| 6:00/km | 9:39/mi | 10 km/h | 1:00:00 |
| 6:30/km | 10:28/mi | 9.23 km/h | 1:05:00 |
| 7:00/km | 11:16/mi | 8.57 km/h | 1:10:00 |
| 7:30/km | 12:04/mi | 8 km/h | 1:15:00 |
| 8:00/km | 12:52/mi | 7.5 km/h | 1:20:00 |
| Pace / km | Pace / mile | Speed | Total time |
|---|---|---|---|
| 3:00/km | 4:50/mi | 20 km/h | 1:03:18 |
| 3:30/km | 5:38/mi | 17.14 km/h | 1:13:50 |
| 4:00/km | 6:26/mi | 15 km/h | 1:24:23 |
| 4:30/km | 7:15/mi | 13.33 km/h | 1:34:56 |
| 5:00/km | 8:03/mi | 12 km/h | 1:45:29 |
| 5:30/km | 8:51/mi | 10.91 km/h | 1:56:02 |
| 6:00/km | 9:39/mi | 10 km/h | 2:06:35 |
| 6:30/km | 10:28/mi | 9.23 km/h | 2:17:08 |
| 7:00/km | 11:16/mi | 8.57 km/h | 2:27:41 |
| 7:30/km | 12:04/mi | 8 km/h | 2:38:14 |
| 8:00/km | 12:52/mi | 7.5 km/h | 2:48:47 |
| Pace / km | Pace / mile | Speed | Total time |
|---|---|---|---|
| 3:00/km | 4:50/mi | 20 km/h | 2:06:35 |
| 3:30/km | 5:38/mi | 17.14 km/h | 2:27:41 |
| 4:00/km | 6:26/mi | 15 km/h | 2:48:47 |
| 4:30/km | 7:15/mi | 13.33 km/h | 3:09:53 |
| 5:00/km | 8:03/mi | 12 km/h | 3:30:59 |
| 5:30/km | 8:51/mi | 10.91 km/h | 3:52:04 |
| 6:00/km | 9:39/mi | 10 km/h | 4:13:10 |
| 6:30/km | 10:28/mi | 9.23 km/h | 4:34:16 |
| 7:00/km | 11:16/mi | 8.57 km/h | 4:55:22 |
| 7:30/km | 12:04/mi | 8 km/h | 5:16:28 |
| 8:00/km | 12:52/mi | 7.5 km/h | 5:37:34 |
Running pace questions
How do I convert pace per km to pace per mile?
One mile is 1.609344 km. Multiply seconds per km by 1.609344: 5:00/km becomes 8:03/mile, rounded to the nearest second.
What pace do I need for a two-hour half marathon or four-hour marathon?
Both require about 5:41/km. Choose 21K and 2:00:00, or 42K and 4:00:00, in pace mode. The calculator uses 21.0975 and 42.195 km and keeps the unrounded pace internally so the finish time matches your target.
Do pace charts predict my race performance?
No. They convert a constant pace into finish times. Hills, heat, fatigue and stops can change your actual pace. Displayed times round to the nearest second.
Related tools and reading
Race time predictor →Want adaptive paces, not static targets?
SportPlan applies your pace zones to every session and re-calibrates them every time you do a field test or finish a race. See your first week before you pay. €9.99/month, cancel anytime.
Methodology
Methodology designed by Ramon Curto, MSc Exercise Physiology
Ramon Curto designed SportPlan's endurance-training methodology from exercise-physiology principles. SportPlan applies it autonomously to the information you enter and the data you choose to connect; it is not ongoing one-to-one coaching or medical care.
Last revised July 2026
- MSc Exercise Physiology
- Endurance-training methodology
- Connected training-data analysis
- Block periodization · Polarized training