Race Split Calculator
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Even splits for your target finish time — same pace every segment.
Race plan
Split pace
5:00 /km
5 even splits over 10 km
- 2 km
- 10:00
- 4 km
- 20:00
- 6 km
- 30:00
- 8 km
- 40:00
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Even race splits
Even splits mean each segment of the race takes the same time — the most common pacing plan for distance races. Divide total time by the number of splits to get per-segment pace, then accumulate for checkpoint times.
Many runners aim for slight negative splits (second half faster) in practice, but even splits are the simplest baseline. Wind, crowds, and aid stations add seconds — use splits as guides, not rigid targets.
Example: 10 km in 50 minutes with 5 × 2 km splits → 10:00 per split. Checkpoints at 2, 4, 6, 8, and 10 km should read 10, 20, 30, 40, and 50 minutes.
Common questions
How many splits should I use?
Match course markers — 1 km splits for 5K/10K, 5 km splits for half marathon, or whatever your watch displays.
What are negative splits?
Running the second half faster than the first. This calculator shows even splits; run the second half slightly under each checkpoint for negative splits.