About the Running Time Calculator
Predicted finish time for any distance from your target pace — with the pace and speed shown.
Also known as: finish time calculator, race time from pace, how long to run.
How to use this calculator
- Enter calculate, distance unit and the other fields.
- 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 = time ÷ distance · Speed = distance ÷ time
Worked example
Using the values pre-filled in the calculator above:
- Calculate: Finish time
- Distance unit: Kilometres
- Distance = 21.0975
- Pace (mm:ss per unit): 5:30
the calculator returns:
- Finish time: 1:56:02.2
- Pace: 5:30 per km
- Speed: 10.91 km/h