Formula
The standard marathon is 42.195 kilometers:
Seconds per km = finish seconds / 42.195
The displayed pace rounds to the nearest second. A general distance still belongs on the running-pace page.
Assumptions
- The distance is exactly 42.195 km.
- The finish time is hours and minutes, with no extra seconds.
Worked example
A 4:00 marathon is 5:41 per kilometer.
Input definitions
- Finish time
- Hours and minutes for the full marathon.
Limitations
The pace is an average. It does not build a negative split or account for hills.
Questions
Why 42.195?
That is the standard marathon distance in kilometers.
Does this predict the time from a shorter race?
No. Use the race-time page for a prediction. This page divides a finish time you already have.