Pace per mile
13:21/mi
Pace per km
8:18/km
Speed
4.49mph
Distance
21.10km
Half marathon
Show the math
Pace = 2:55:00 ÷ 13.11 mi = 13:21 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:13:21 |
| Mile 2 | 0:26:42 |
| Mile 3 | 0:40:03 |
| Mile 4 | 0:53:24 |
| Mile 5 | 1:06:45 |
| Mile 6 | 1:20:06 |
| Mile 7 | 1:33:27 |
| Mile 8 | 1:46:48 |
| Mile 9 | 2:00:09 |
| Mile 10 | 2:13:30 |
| Mile 11 | 2:26:50 |
| Mile 12 | 2:40:11 |
| Mile 13 | 2:53:32 |
| Finish | 2:55:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:11:26 | 11:26 |
| 5K | 0:38:03 | 12:15 |
| 10K | 1:19:19 | 12:46 |
| Marathon | 6:04:52 | 13:55 |
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 2:55:00 Half marathon?
13:21 per mile, or 8:18 per kilometer.
What would that predict for other races?
1 mile about 0:11:26; 5K about 0:38:03; 10K about 1:19:19, using Riegel's formula.