Pace Calculator
2:21 Marathon Pace
To finish a Marathon in 2h21, you need to maintain a pace of 3:20 per km (5:23 per mile). Here's your complete split breakdown.
Pace per KM
3:20
min/km
Pace per Mile
5:23
min/mile
Average Speed
18.0
km/h
2h21 Marathon Splits
Plan my Marathon pacing strategy →| Distance | Split Pace | Cumulative Time |
|---|---|---|
| 1 km | 3:20 | 3:20 |
| 2 km | 3:20 | 6:41 |
| 3 km | 3:20 | 10:01 |
| 4 km | 3:20 | 13:22 |
| 5 km | 3:20 | 16:42 |
| 6 km | 3:20 | 20:03 |
| 7 km | 3:20 | 23:23 |
| 8 km | 3:20 | 26:44 |
| 9 km | 3:20 | 30:04 |
| 10 km | 3:20 | 33:25 |
| 11 km | 3:20 | 36:45 |
| 12 km | 3:20 | 40:06 |
| 13 km | 3:20 | 43:26 |
| 14 km | 3:20 | 46:47 |
| 15 km | 3:20 | 50:07 |
| 16 km | 3:20 | 53:28 |
| 17 km | 3:20 | 56:48 |
| 18 km | 3:20 | 1:00:09 |
| 19 km | 3:20 | 1:03:29 |
| 20 km | 3:20 | 1:06:50 |
| 21 km | 3:20 | 1:10:10 |
| 22 km | 3:20 | 1:13:31 |
| 23 km | 3:20 | 1:16:51 |
| 24 km | 3:20 | 1:20:12 |
| 25 km | 3:20 | 1:23:32 |
| 26 km | 3:20 | 1:26:53 |
| 27 km | 3:20 | 1:30:13 |
| 28 km | 3:20 | 1:33:34 |
| 29 km | 3:20 | 1:36:54 |
| 30 km | 3:20 | 1:40:15 |
| 31 km | 3:20 | 1:43:35 |
| 32 km | 3:20 | 1:46:56 |
| 33 km | 3:20 | 1:50:16 |
| 34 km | 3:20 | 1:53:37 |
| 35 km | 3:20 | 1:56:57 |
| 36 km | 3:20 | 2:00:18 |
| 37 km | 3:20 | 2:03:38 |
| 38 km | 3:20 | 2:06:59 |
| 39 km | 3:20 | 2:10:19 |
| 40 km | 3:20 | 2:13:40 |
| 41 km | 3:20 | 2:17:00 |
| 42 km | 3:20 | 2:20:21 |
| 42.20 km | 3:20 | 2:21:00 |
Ready to Run a 2h21 Marathon?
Getting to 2h21 for your Marathon takes more than just knowing your pace. RunPlan creates a personalized AI training plan based on your current fitness, schedule, and race date to help you hit your goal.