race_splits_calculator_preview Running splits calculator estimates your finish time or required pace for a target result in a race, and provides a flexible break down into manageable splits. The tool will make planning a pacing strategy for a race much easier.

It can be also a regular running workout or routine training session. The calculator supports equal splits, negative splits, as well as real-world scenarios like positive splits or even re-acceleration after a slowdown in the middle of run.

Adjust finish time or average pace with sliders or text inputs. The remaining values will be recalculated instantly. The pace values for every split a going to be updated in the table and plotted in the graph, which provides a really nice visualization.

1. Estimate running pace and finish time:

Distance
42.195 km
Pace
5:30 /km
Finish Time
03:52:00

2. Calculate running splits:

# Pace Interval Length Duration Elapsed