Run Pace Half Marathon Pace Calculator
Over 21.1 km, pacing matters more than raw speed. A half marathon run just a little too hard in the first 10 km usually costs minutes in the last 5. Use the calculator to fix your goal pace before race day, then check your splits on the pace band.
Change the goal time with the steppers and the required pace per kilometre and per mile updates as you type. The half marathon pace chart below covers finish times from 1:10 to 3:00.
Predicted from this effort using the Riegel formula.
- 5K5:30/km27:31
- 10K5:44/km57:22
- 10 Miles5:54/km1:35:00
- Half MarathonCurrent6:00/km2:06:35
- Marathon6:15/km4:23:55
| Finish time | Pace (min/km) | Pace (min/mile) |
|---|---|---|
| 1:10:00 | 3:19 | 5:20 |
| 1:15:00 | 3:33 | 5:43 |
| 1:20:00 | 3:48 | 6:06 |
| 1:25:00 | 4:02 | 6:29 |
| 1:30:00 | 4:16 | 6:52 |
| 1:35:00 | 4:30 | 7:15 |
| 1:40:00 | 4:44 | 7:38 |
| 1:45:00 | 4:59 | 8:01 |
| 1:50:00 | 5:13 | 8:23 |
| 1:55:00 | 5:27 | 8:46 |
| 2:00:00 | 5:41 | 9:09 |
| 2:05:00 | 5:55 | 9:32 |
| 2:10:00 | 6:10 | 9:55 |
| 2:15:00 | 6:24 | 10:18 |
| 2:20:00 | 6:38 | 10:41 |
| 2:25:00 | 6:52 | 11:04 |
| 2:30:00 | 7:07 | 11:27 |
| 2:35:00 | 7:21 | 11:49 |
| 2:40:00 | 7:35 | 12:12 |
| 2:45:00 | 7:49 | 12:35 |
| 2:50:00 | 8:03 | 12:58 |
| 2:55:00 | 8:18 | 13:21 |
| 3:00:00 | 8:32 | 13:44 |
Frequently asked questions
What pace do I need for a sub-2 hour half marathon?
To break two hours you need to average 5:41 per kilometre or 9:09 per mile. Most runners aim a few seconds faster to leave room for water stations and crowded starts.
How long is a half marathon?
A half marathon is 21.0975 kilometres, or 13.1 miles. The calculator uses the exact distance, so the pace it shows matches an official course.
What pace is a 1:45 half marathon?
A 1:45 half marathon works out to about 4:59 per kilometre, or roughly 8:01 per mile.