Race Pace Pro

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.

DistanceElapsed
1 km4:44
2 km9:29
3 km14:13
4 km18:58
5 km23:42
6 km28:26
7 km33:11
8 km37:55
9 km42:40
10 km47:24
11 km52:08
12 km56:53
13 km1:01:37
14 km1:06:22
15 km1:11:06
16 km1:15:50
17 km1:20:35
18 km1:25:19
19 km1:30:03
20 km1:34:48
21 km1:39:32
21.1 km1:40:00
DistanceElapsed
1 mi7:38
2 mi15:15
3 mi22:53
4 mi30:31
5 mi38:08
6 mi45:46
7 mi53:24
8 mi1:01:02
9 mi1:08:39
10 mi1:16:17
11 mi1:23:55
12 mi1:31:32
13 mi1:39:10
13.11 mi1:40:00

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.

Open in the calculator

Other Half Marathon targets

All Half Marathon paces →