Toolstia / running pace calculator
Running pace calculator
Enter any two of distance, time and pace to work out the third. See pace per kilometre and per mile, speed, and finish times for common races at the same pace.
Race times assume you hold the same pace the whole way, which most runners find harder over longer distances.
How it works
- Choose what to work out.
- Enter the distance, time or pace.
- Read the pace, speed and race times.
Pace
Pace is time per distance, such as 5:00 per kilometre. It is the opposite of speed.
Units
Switch between kilometres and miles. Both paces are always shown.
Race times
The table shows how long 5K, 10K, half and full marathons take if you hold the pace.
Time format
Enter time as mm:ss or h:mm:ss.
Questions
Can I hold the same pace in a marathon?
Most runners slow down over longer races.
What is a half marathon distance?
21.0975 kilometres.
Is my data stored?
Everything is worked out in your browser, and nothing you type is sent anywhere.