Race Split Calculator
Enter a target finish time to build even, negative, or positive split plans with checkpoints and optional cadence or stride insight.
How to use this race split calculator
Choose your race distance, enter your target finish time, select kilometers or miles, then calculate a split plan you can use on race day.
Even split vs negative split
Even splits keep the same pace throughout the race. Negative splits start slightly controlled and ask you to finish faster, which is often easier to execute in longer races.
Cadence, stride length, and race pace
Cadence and stride length are a pace relationship. The estimate here helps you understand the numbers, but it is not a form prescription.
FAQ
What is a race split calculator?
A race split calculator converts a target finish time into lap-by-lap and checkpoint times for a race distance.
Should I use even or negative splits?
Even splits are simpler. Negative splits can work well for half marathon and marathon goals when you can start controlled and finish stronger.
Can I use miles instead of kilometers?
Yes. The calculator keeps the race distance fixed and changes the split table between kilometers and miles.