Running pace calculator
Turn distance and time into pace and race finishes.
About this calculator
Enter a recent run in kilometres or miles to see your pace in both, along with your speed and equivalent finish times.
Finish times assume you hold the same pace for the whole distance. Most runners slow down over longer races, so treat the marathon time as optimistic if your run was short.
How it works
Pace is time divided by distance. Race times assume you hold the same pace the whole way, which gets harder over longer distances.
Worked example
- Distance: 10
- Distance in: Kilometres
- Minutes: 55
Pace: 5:30 /km (8:51 /mi)
The story behind it
Pace is the number runners have always chased. When Roger Bannister ran the first mile under four minutes in 1954, it came down to averaging just under 15 seconds per 100 metres. The marathon's odd 42.195 km was set at the 1908 London Olympics and became the standard in 1921. This calculator turns any run into a pace and shows what it would mean over those classic distances.
Why you can trust this calculator
- It runs in your browser. Nothing you type into it is sent anywhere.
- The method is explained on this page, so you can check it yourself.
- Free to use, with no sign-up.
- Results are estimates, not medical advice.
- Spotted a mistake? Tell us and we'll look into it.
After 15 years as a mathematics educator, I built CalculStore to give students, teachers, professionals and anyone working with numbers simple, reliable tools.
Meet the founder