Pace Calculator
21 minutes 5K Pace
To finish a 5K in 21min, you need to maintain a pace of 4:12 per km (6:46 per mile). Here's your complete split breakdown.
Pace per KM
4:12
min/km
Pace per Mile
6:46
min/mile
Average Speed
14.3
km/h
21min 5K Splits
Plan my 5K pacing strategy →| Distance | Split Pace | Cumulative Time |
|---|---|---|
| 1 km | 4:12 | 4:12 |
| 2 km | 4:12 | 8:24 |
| 3 km | 4:12 | 12:36 |
| 4 km | 4:12 | 16:48 |
| 5 km | 4:12 | 21:00 |
Ready to Run a 21min 5K?
Getting to 21min for your 5K 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.