Pace per mile
7:38/mi
Pace per km
4:44/km
Speed
7.87mph
Distance
21.10km
Half marathon
Show the math
Pace = 1:40:00 ÷ 13.11 mi = 7:38 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:07:38 |
| Mile 2 | 0:15:15 |
| Mile 3 | 0:22:53 |
| Mile 4 | 0:30:31 |
| Mile 5 | 0:38:08 |
| Mile 6 | 0:45:46 |
| Mile 7 | 0:53:24 |
| Mile 8 | 1:01:01 |
| Mile 9 | 1:08:39 |
| Mile 10 | 1:16:17 |
| Mile 11 | 1:23:55 |
| Mile 12 | 1:31:32 |
| Mile 13 | 1:39:10 |
| Finish | 1:40:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:06:32 | 6:32 |
| 5K | 0:21:44 | 7:00 |
| 10K | 0:45:19 | 7:18 |
| Marathon | 3:28:30 | 7:57 |
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 1:40:00 Half marathon?
7:38 per mile, or 4:44 per kilometer.
What would that predict for other races?
1 mile about 0:06:32; 5K about 0:21:44; 10K about 0:45:19, using Riegel's formula.