Pace per mile
9:32/mi
Pace per km
5:55/km
Speed
6.29mph
Distance
21.10km
Half marathon
Show the math
Pace = 2:05:00 ÷ 13.11 mi = 9:32 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:09:32 |
| Mile 2 | 0:19:04 |
| Mile 3 | 0:28:36 |
| Mile 4 | 0:38:08 |
| Mile 5 | 0:47:41 |
| Mile 6 | 0:57:13 |
| Mile 7 | 1:06:45 |
| Mile 8 | 1:16:17 |
| Mile 9 | 1:25:49 |
| Mile 10 | 1:35:21 |
| Mile 11 | 1:44:53 |
| Mile 12 | 1:54:25 |
| Mile 13 | 2:03:57 |
| Finish | 2:05:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:08:10 | 8:10 |
| 5K | 0:27:10 | 8:45 |
| 10K | 0:56:39 | 9:07 |
| Marathon | 4:20:37 | 9:56 |
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 2:05:00 Half marathon?
9:32 per mile, or 5:55 per kilometer.
What would that predict for other races?
1 mile about 0:08:10; 5K about 0:27:10; 10K about 0:56:39, using Riegel's formula.