Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Race Split Calculator

Plan your race pace by calculating per-mile or per-km splits from your goal finish time. Use it when targeting a specific finishing time for any race distance from 5K to marathon.

Race Distance

Goal Time (Hours) (hrs)

Goal Time (Minutes) (mins)

Goal Time (Seconds) (secs)

Pacing Strategy

Fill in the required fields to see your result.

Running

Race Time Predictor

Predict your finish time at any race distance using a recent result from a different distance. Ideal for setting realistic goals when stepping up from a 5K to a half marathon or full marathon.

Known Race Distance

Known Time (Hours) (hr)

Known Time (Minutes) (min)

Target Race Distance

Fill in the required fields to see your result.

Key differences

	Race Split Calculator	Race Time Predictor
Category	Running	Running
Inputs required	5	4
Result	Average Pace per Kilometer (seconds)	Predicted Time (minutes)
What it does	Plan your race pace by calculating per-mile or per-km splits from your goal finish time. Use it when targeting a specific finishing time for any race distance from 5K to marathon.	Predict your finish time at any race distance using a recent result from a different distance. Ideal for setting realistic goals when stepping up from a 5K to a half marathon or full marathon.