Pace per mile
6:29/mi
Pace per km
4:02/km
Speed
9.25mph
Distance
21.10km
Half marathon
Show the math
Pace = 1:25:00 ÷ 13.11 mi = 6:29 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:06:29 |
| Mile 2 | 0:12:58 |
| Mile 3 | 0:19:27 |
| Mile 4 | 0:25:56 |
| Mile 5 | 0:32:25 |
| Mile 6 | 0:38:54 |
| Mile 7 | 0:45:23 |
| Mile 8 | 0:51:52 |
| Mile 9 | 0:58:21 |
| Mile 10 | 1:04:50 |
| Mile 11 | 1:11:19 |
| Mile 12 | 1:17:48 |
| Mile 13 | 1:24:17 |
| Finish | 1:25:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:05:33 | 5:33 |
| 5K | 0:18:29 | 5:57 |
| 10K | 0:38:31 | 6:12 |
| Marathon | 2:57:13 | 6:46 |
Riegel's formula: T2 = T1 × (D2 ÷ D1)^1.06. Assumes training for the distance.
How to use it
- Enter your numbers. Switch between US and metric units at any time.
- Results update as you type, and the formula is shown so you can check it.
- Copy the link, save the plan on this device, or print it for your next appointment.
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These are estimates, not a diagnosis. A clinician can account for your health history and medicines.
Other Half marathon times
Common questions
What pace is a 1:25:00 Half marathon?
6:29 per mile, or 4:02 per kilometer.
What would that predict for other races?
1 mile about 0:05:33; 5K about 0:18:29; 10K about 0:38:31, using Riegel's formula.