Sub-1:40 Half Marathon pace
To finish a half marathon in under 1:40, you need to average 4:44 per kilometre, or 7:38 per mile, for the full 21.0975 km.
Required pace
4:44 /km
7:38 per mile · finish 1:40:00
Threshold effort
Even-paced splits
Elapsed time you should see at each marker if you run the whole thing at one effort.
| Distance | Elapsed |
|---|---|
| 1 km | 4:44 |
| 2 km | 9:29 |
| 3 km | 14:13 |
| 4 km | 18:58 |
| 5 km | 23:42 |
| 6 km | 28:26 |
| 7 km | 33:11 |
| 8 km | 37:55 |
| 9 km | 42:40 |
| 10 km | 47:24 |
| 11 km | 52:08 |
| 12 km | 56:53 |
| 13 km | 1:01:37 |
| 14 km | 1:06:22 |
| 15 km | 1:11:06 |
| 16 km | 1:15:50 |
| 17 km | 1:20:35 |
| 18 km | 1:25:19 |
| 19 km | 1:30:03 |
| 20 km | 1:34:48 |
| 21 km | 1:39:32 |
| 21.1 km | 1:40:00 |
| Distance | Elapsed |
|---|---|
| 1 mi | 7:38 |
| 2 mi | 15:15 |
| 3 mi | 22:53 |
| 4 mi | 30:31 |
| 5 mi | 38:08 |
| 6 mi | 45:46 |
| 7 mi | 53:24 |
| 8 mi | 1:01:02 |
| 9 mi | 1:08:39 |
| 10 mi | 1:16:17 |
| 11 mi | 1:23:55 |
| 12 mi | 1:31:32 |
| 13 mi | 1:39:10 |
| 13.11 mi | 1:40:00 |
Pacing it in practice
These splits assume even effort on a flat course. Most personal bests are actually run slightly negative. That means a touch slower than target for the first half, then faster once you know the effort is sustainable. Going out fast and hanging on is the most common way to miss a time goal.
Open this target in the calculator to adjust it, switch units, or model a negative split.