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by Dockia Labs

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HjemBeregnereMarathon pace plannerSub-4 marathon pace plan
Free tool

Sub-4 marathon pace plan

The most popular amateur goal. Hit it right.

Plan your sub-4 marathon (or sub-3:59) with first/second-half splits across 4 strategies. The classic amateur breakthrough.

Opdateret 18. maj 2026
Your marathon goal
1
Target finish time
The clock time you want to see at 42.195 km.
Hours
Minutes
Seconds
2
Split strategy
Classic negative-split goal.
Race plan
4:00:00
-2% negative

For a 4:00:00 marathon with a -2% negative, run the first half in 2:01:13 and the second in 1:58:47.

First half
2:01:13
5:45/km
Second half
1:58:47
5:38/km
Find a marathon
Every-5K targets

Cumulative time at each 5K mark. Print this and stick it on your wrist on race day.

DistanceTarget paceCumulative
5K5:45/km28:44
10K5:45/km57:27
15K5:45/km1:26:11
20K5:45/km1:54:54
25K5:38/km2:23:11
30K5:38/km2:51:20
35K5:38/km3:19:29
40K5:38/km3:47:38
Marathon5:38/km4:00:00

Sub-4 marathon split strategies

A 4:00 marathon is 5:41/km. Reference splits — most first-time sub-4 finishers go conservative -1% or -2%.

StrategiFørste halvdelAnden halvdelTempo 1.Tempo 2.Noter
Even split2:00:002:00:005:41/km5:41/kmPredictable. Discipline-test in the second half.
-1% negative2:01:001:59:005:44/km5:38/kmConservative. Best bet for first sub-4 attempt.
-2% negative2:02:011:57:595:47/km5:35/kmClassic well-paced sub-4.
-3% negative2:03:011:56:595:50/km5:32/kmAggressive. Strong fitness required.
Flere planer og guider
Hvad er en god maratontid?Sub-3 marathon pace planSub-3:30 marathon pace planSub-5 marathon pace planGenerel planlæggerMaraton i nærheden