Pace per mile
10:41/mi
Pace per km
6:38/km
Speed
5.62mph
Distance
21.10km
Half marathon
Show the math
Pace = 2:20:00 ÷ 13.11 mi = 10:41 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:10:41 |
| Mile 2 | 0:21:22 |
| Mile 3 | 0:32:02 |
| Mile 4 | 0:42:43 |
| Mile 5 | 0:53:24 |
| Mile 6 | 1:04:05 |
| Mile 7 | 1:14:45 |
| Mile 8 | 1:25:26 |
| Mile 9 | 1:36:07 |
| Mile 10 | 1:46:48 |
| Mile 11 | 1:57:28 |
| Mile 12 | 2:08:09 |
| Mile 13 | 2:18:50 |
| Finish | 2:20:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:09:09 | 9:09 |
| 5K | 0:30:26 | 9:48 |
| 10K | 1:03:27 | 10:13 |
| Marathon | 4:51:53 | 11:08 |
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 2:20:00 Half marathon?
10:41 per mile, or 6:38 per kilometer.
What would that predict for other races?
1 mile about 0:09:09; 5K about 0:30:26; 10K about 1:03:27, using Riegel's formula.