Split calculator|Split calculator|

The calculator spreads your goal time across the distance. With an even strategy every split is the same speed; with negative splits you gradually speed up, with positive splits you slow down. The table shows both the individual split and the cumulative clock at each point.

Running even is the most efficient and easiest to sustain for most runners. A slight negative split (1-3% faster in the second half) often delivers the best result. Positive splits usually happen by accident from starting too fast — rarely a deliberate choice.

Write your key splits on a wristband or program them into your watch. Check your splits at each marker, but be careful not to overcorrect: small deviations are normal due to bends, hills and congestion at the start.