Race Pace Pro

Sub-3:45 Marathon pace

To finish a marathon in under 3:45, you need to average 5:20 per kilometre, or 8:35 per mile, for the full 42.195 km.

Required pace
5:20 /km
8:35 per mile · finish 3:45:00
Steady effort

Even-paced splits

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

DistanceElapsed
1 km5:20
2 km10:40
3 km16:00
4 km21:20
5 km26:40
6 km32:00
7 km37:20
8 km42:40
9 km47:59
10 km53:19
11 km58:39
12 km1:03:59
13 km1:09:19
14 km1:14:39
15 km1:19:59
16 km1:25:19
17 km1:30:39
18 km1:35:59
19 km1:41:19
20 km1:46:39
21 km1:51:59
22 km1:57:19
23 km2:02:39
24 km2:07:59
25 km2:13:19
26 km2:18:39
27 km2:23:58
28 km2:29:18
29 km2:34:38
30 km2:39:58
31 km2:45:18
32 km2:50:38
33 km2:55:58
34 km3:01:18
35 km3:06:38
36 km3:11:58
37 km3:17:18
38 km3:22:38
39 km3:27:58
40 km3:33:18
41 km3:38:38
42 km3:43:58
42.2 km3:45:00
DistanceElapsed
1 mi8:35
2 mi17:10
3 mi25:45
4 mi34:20
5 mi42:54
6 mi51:29
7 mi1:00:04
8 mi1:08:39
9 mi1:17:14
10 mi1:25:49
11 mi1:34:24
12 mi1:42:59
13 mi1:51:34
14 mi2:00:09
15 mi2:08:43
16 mi2:17:18
17 mi2:25:53
18 mi2:34:28
19 mi2:43:03
20 mi2:51:38
21 mi3:00:13
22 mi3:08:48
23 mi3:17:23
24 mi3:25:58
25 mi3:34:32
26 mi3:43:07
26.22 mi3:45:00

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 Marathon targets

All Marathon paces →