Marathon Pace & Split Calculator

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Generate pacing split times for 5K, 10K, half-marathons, and full marathons based on your target finish time.

Select Race Distance

Target Time (Hrs : Mins : Secs)

How to Plan Your Race Pacing Strategy

Determining your exact splits is crucial to preventing the common mistake of starting a marathon too fast. Running even splits (or slightly negative splits, where the second half is faster) is biologically the most efficient way to achieve a personal record.

Frequently Asked Questions

A split is the time it takes to complete a specific distance interval (usually 1 km or 1 mile) during a longer race.

It is pacing yourself conservatively in the first half of the race and running the second half faster as your body adapts to the effort.