Pace per mile
9:55/mi
Pace per km
6:10/km
Speed
6.05mph
Distance
21.10km
Half marathon
Show the math
Pace = 2:10:00 ÷ 13.11 mi = 9:55 /mi
Splits
| Split | Time |
|---|---|
| Mile 1 | 0:09:55 |
| Mile 2 | 0:19:50 |
| Mile 3 | 0:29:45 |
| Mile 4 | 0:39:40 |
| Mile 5 | 0:49:35 |
| Mile 6 | 0:59:30 |
| Mile 7 | 1:09:25 |
| Mile 8 | 1:19:20 |
| Mile 9 | 1:29:15 |
| Mile 10 | 1:39:10 |
| Mile 11 | 1:49:05 |
| Mile 12 | 1:59:00 |
| Mile 13 | 2:08:55 |
| Finish | 2:10:00 |
Equivalent race times
| Race | Predicted time | Pace per mile |
|---|---|---|
| 1 mile | 0:08:30 | 8:30 |
| 5K | 0:28:16 | 9:06 |
| 10K | 0:58:55 | 9:29 |
| Marathon | 4:31:02 | 10:20 |
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 2:10:00 Half marathon?
9:55 per mile, or 6:10 per kilometer.
What would that predict for other races?
1 mile about 0:08:30; 5K about 0:28:16; 10K about 0:58:55, using Riegel's formula.