About the Marathon Pace Calculator
Pace per kilometre and mile for a target Marathon time, with 1 km, 5 km and half-way splits.
Also known as: marathon pace, marathon time, marathon splits, marathon training pace.
How to use this calculator
- Enter target marathon time (h:mm:ss), distance unit.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Pace = target time ÷ race distance
Worked example
Using the values pre-filled in the calculator above:
- Target Marathon time (h:mm:ss): 04:00:00
- Distance unit: Kilometres
the calculator returns:
- Pace per km: 5:41.3
- Pace per mile: 9:09.2
- Speed: 10.55 km/h
- Speed (mph): 6.55 mph