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Running distance

Work out running distance from average pace and elapsed time.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Results update as you type. The formula and assumptions are explained below the calculator.

Estimated distance

8.18 km

Distance in kilometres8.18 km
Distance in miles5.08 mi
Average speed10.9 km/h
Pace per mile8:51 /mi

Estimate only. It assumes a constant pace; hills, stops, heat and fatigue make real runs vary around this average.

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What does this tool do?

Distance is simply time divided by pace. Entering pace in minutes per kilometre or mile and a duration gives the distance covered, plus the equivalent in the other unit.

The Formula

Distance = time ÷ pace

Frequently Asked Questions

What is the difference between pace and speed?

Pace is minutes per kilometre or mile; speed is distance per hour. They are reciprocals, so a faster runner has a lower pace and a higher speed.

Does this account for walking breaks?

No. It assumes the whole duration was run at one pace. For intervals, add the work and recovery times separately or use average moving pace.