Splits Calculator
Running Splits Calculator
Enter your race distance and target finish time to calculate even pacing splits in kilometres or miles.
Splits
Calculate race splits
Enter a race distance and target finish time to calculate even pacing splits in kilometres or miles.
Race presets
Finish
25:00
min/km
5:00
min/mile
8:03
View split table
| Split | Cumulative time |
|---|---|
| 1 km | 5:00 |
| 2 km | 10:00 |
| 3 km | 15:00 |
| 4 km | 20:00 |
| 5 km | 25:00 |
What are running splits?
Running splits show your cumulative time at each kilometre or mile. They are useful for planning an even pace during races such as 5K, 10K, half marathon and marathon events.
Common Examples
20 minute 5K
4:00/km
Plan even kilometre splits of 4:00, 8:00, 12:00, 16:00 and 20:00.
45 minute 10K
4:30/km
Use even pacing to avoid banking too much time early.
4 hour marathon
5:41/km
Check cumulative splits against aid stations and mile markers.
When To Use This Calculator
- Building a pacing band for race day.
- Checking whether your first half is too fast.
- Planning watch alerts for kilometre or mile markers.
- Turning a goal finish time into repeatable split targets.
Related Calculators
Frequently asked questions
What are race splits?
Splits are cumulative or segment times at regular distance markers, such as each kilometre or mile.
Should I run even splits?
Even splits are a reliable starting point for most goal races, especially 5K through marathon distances.
Can I calculate mile splits?
Yes. Choose miles as the distance unit to plan splits around mile markers.