raceIQ

3:55 marathon pace

Hold 8:58 per mile (5:34 per km) to run a 3:55 marathon, a time that's top 33% of US finishers.
Pace per mile
8:58
Pace per km
5:34
Halfway
1:57:30
Finish
3:55:00

Mile splits

Mile 18:58
Mile 217:56
Mile 326:53
Mile 435:51
Mile 544:49
Mile 653:47
Mile 71:02:44
Mile 81:11:42
Mile 91:20:40
Mile 101:29:38
Mile 111:38:36
Mile 121:47:33
Mile 131:56:31
Mile 142:05:29
Mile 152:14:27
Mile 162:23:25
Mile 172:32:22
Mile 182:41:20
Mile 192:50:18
Mile 202:59:16
Mile 213:08:13
Mile 223:17:11
Mile 233:26:09
Mile 243:35:07
Mile 253:44:05
Mile 263:53:02
Finish3:55:00

5K splits

5K27:51
10K55:42
15K1:23:32
20K1:51:23
Halfway1:57:30
25K2:19:14
30K2:47:05
35K3:14:56
40K3:42:47
Finish3:55:00

Even splits. Courses, hills and heat change the right pace on the day: check the heat pace calculator for a warm race.

Where 3:55 places in the marathon

Among US finishers in the race results we track, by age and gender. See all marathon times.

Where a 3:55 marathon places among US finishers by age and gender
AgeWomenMen
Under 20Top 31%Top 47%
20–29Top 26%Top 41%
30–39Top 26%Top 43%
40–49Top 25%Top 43%
50–59Top 17%Top 34%
60–69Top 12%Top 22%
70+Top 10%Top 9%
All agesTop 24%Top 40%
The same effort at other distances
  • 5K
    24:30
    7:53/mi
  • 10K
    51:05
    8:13/mi
  • Half marathon
    1:52:43
    8:36/mi

Predicted with Riegel's formula. Try the race time predictor.

Common questions

What pace is a 3:55 marathon?

8:58 per mile, or 5:34 per kilometer, held evenly from start to finish. That puts you through halfway in 1:57:30.

Is 3:55 a good marathon time?

A 3:55 marathon is top 33% of US finishers in the race results we track. How good it is depends on your age and gender: the table on this page shows where it places in each group.

What times at other distances match a 3:55 marathon?

By Riegel's formula, a 3:55 marathon is about the same performance as 24:30 for the 5K, 51:05 for the 10K, 1:52:43 for the half marathon. Longer predictions assume you've trained for the distance.

Does a 3:55 marathon qualify for Boston?

For 2027, 3:55 meets the Boston standard for women aged 55 and over and men aged 65 and over. Meeting it lets you apply; recent years have needed about 5 minutes under it.

Know your pace? See where it would place you. raceIQ ranks upcoming races by where you'd finish in your age group, using each race's past results.

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