Race Pace Pro

Sub-1:20 Half Marathon pace

To finish a half marathon in under 1:20, you need to average 3:48 per kilometre, or 6:06 per mile, for the full 21.0975 km.

Required pace
3:48 /km
6:06 per mile · finish 1:20:00
Interval effort

Even-paced splits

Elapsed time you should see at each marker if you run the whole thing at one effort.

DistanceElapsed
1 km3:48
2 km7:35
3 km11:23
4 km15:10
5 km18:58
6 km22:45
7 km26:33
8 km30:20
9 km34:08
10 km37:55
11 km41:43
12 km45:30
13 km49:18
14 km53:05
15 km56:53
16 km1:00:40
17 km1:04:28
18 km1:08:15
19 km1:12:03
20 km1:15:50
21 km1:19:38
21.1 km1:20:00
DistanceElapsed
1 mi6:06
2 mi12:12
3 mi18:18
4 mi24:25
5 mi30:31
6 mi36:37
7 mi42:43
8 mi48:49
9 mi54:55
10 mi1:01:02
11 mi1:07:08
12 mi1:13:14
13 mi1:19:20
13.11 mi1:20:00

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 →