Pace per mile
6:06/mi
Pace per km
3:48/km
Speed
9.83mph
Distance
21.10km
Half marathon
Show the math
Pace = 1:20:00 ÷ 13.11 mi = 6:06 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:06:06 |
| Mile 2 | 0:12:12 |
| Mile 3 | 0:18:18 |
| Mile 4 | 0:24:25 |
| Mile 5 | 0:30:31 |
| Mile 6 | 0:36:37 |
| Mile 7 | 0:42:43 |
| Mile 8 | 0:48:49 |
| Mile 9 | 0:54:55 |
| Mile 10 | 1:01:01 |
| Mile 11 | 1:07:08 |
| Mile 12 | 1:13:14 |
| Mile 13 | 1:19:20 |
| Finish | 1:20:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:05:14 | 5:14 |
| 5K | 0:17:23 | 5:36 |
| 10K | 0:36:15 | 5:50 |
| Marathon | 2:46:48 | 6:22 |
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 1:20:00 Half marathon?
6:06 per mile, or 3:48 per kilometer.
What would that predict for other races?
1 mile about 0:05:14; 5K about 0:17:23; 10K about 0:36:15, using Riegel's formula.