Race Split Calculator
Calculate even split times per kilometer or mile for your target race finish time.
Plan your pacing strategy for any distance.
Split Times
Even splits mean running each segment of a race at the same pace. This is generally the most efficient pacing strategy.
Split Time = Total Time / Number of Splits
Pacing strategies:
- Even splits: Same pace throughout (recommended for most runners)
- Negative splits: Second half faster than first (advanced strategy)
- Positive splits: First half faster (common but less efficient)
Common race distances:
- 5K: 5 km / 3.1 miles
- 10K: 10 km / 6.2 miles
- Half Marathon: 21.1 km / 13.1 miles
- Marathon: 42.2 km / 26.2 miles
Tip: Try to run each split within 5-10 seconds of your target pace. Going out too fast is the most common race mistake.