Marathon Pace Calculator
Convert the marathon world record's pacing to your goal time. Apply the top runners' effort distribution to your own race.
World Record Split Converter
Pacing basis
Split interval
Pacing pattern
An idealised smooth negative split — steady, even-ish pacing.
Average pace
4:16 /km
First half
1:30:33
Second half
1:29:27
| Point | Target split | Segment | Pace /km | vs even |
|---|---|---|---|---|
| 5 km | 21:35 | 21:35 | 4:19 | +0:16 |
| 10 km | 43:06 | 21:30 | 4:18 | +0:26 |
| 15 km | 1:04:31 | 21:25 | 4:17 | +0:32 |
| 20 km | 1:25:52 | 21:21 | 4:16 | +0:33 |
| 25 km | 1:47:11 | 21:19 | 4:16 | +0:32 |
| 30 km | 2:08:27 | 21:16 | 4:15 | +0:29 |
| 35 km | 2:29:40 | 21:12 | 4:14 | +0:21 |
| 40 km | 2:50:47 | 21:07 | 4:13 | +0:09 |
| Finish | 3:00:00 | 9:13 | 4:12 | 0:00 |
Pace /km · Marathon
What this means. Running 3:00:00 with the world-record pacing curve gives a first half of 1:30:33 and a second half of 1:29:27 — a negative split of about 1:06. Your early pace is slightly controlled and your second half is faster, just like the record.
A pacing guide only — always adapt to the course, weather and how you feel on the day.