Pace Calculator
2:21 Half Marathon Pace
To finish a Half Marathon in 2h21, you need to maintain a pace of 6:41 per km (10:45 per mile). Here's your complete split breakdown.
Pace per KM
6:41
min/km
Pace per Mile
10:45
min/mile
Average Speed
9.0
km/h
2h21 Half Marathon Splits
Plan my Half Marathon pacing strategy →| Distance | Split Pace | Cumulative Time |
|---|---|---|
| 1 km | 6:41 | 6:41 |
| 2 km | 6:41 | 13:22 |
| 3 km | 6:41 | 20:03 |
| 4 km | 6:41 | 26:44 |
| 5 km | 6:41 | 33:25 |
| 6 km | 6:41 | 40:06 |
| 7 km | 6:41 | 46:47 |
| 8 km | 6:41 | 53:28 |
| 9 km | 6:41 | 1:00:09 |
| 10 km | 6:41 | 1:06:50 |
| 11 km | 6:41 | 1:13:31 |
| 12 km | 6:41 | 1:20:12 |
| 13 km | 6:41 | 1:26:53 |
| 14 km | 6:41 | 1:33:34 |
| 15 km | 6:41 | 1:40:15 |
| 16 km | 6:41 | 1:46:56 |
| 17 km | 6:41 | 1:53:37 |
| 18 km | 6:41 | 2:00:18 |
| 19 km | 6:41 | 2:06:59 |
| 20 km | 6:41 | 2:13:40 |
| 21 km | 6:41 | 2:20:21 |
| 21.10 km | 6:41 | 2:21:00 |
Ready to Run a 2h21 Half Marathon?
Getting to 2h21 for your Half 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.