Running Pace Calculator
Calculate pace, finish time or distance from any two known values, and see predicted race times.
Pace
05:00 /km
Total time
50:00
Distance
10 km
Predicted race times at this pace
5K
25:00
10K
50:00
21K
01:45:29
42K
03:30:59
Three values, one relationship
Distance, pace and total time are always connected. Pick which one you want to find, fill in the other two, and see race-time predictions for common distances at that same pace.
Calculated instantly, on your device
All math runs directly in your browser as you type — there is no server call and no delay.
Frequently asked questions
What is a good pace for beginners?
It varies widely by fitness level; the goal is a sustainable, conversational pace rather than a specific number.
Are the race-time predictions accurate for a full marathon?
They assume a constant pace, which most runners cannot hold over 42 km, so treat marathon predictions as optimistic estimates.
Can I use this in miles instead of kilometers?
The calculator works in kilometers; multiply your mile pace by 1.60934 to convert it to pace per kilometer first.
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