Running Time Calculator
Just enter your distance and pace (min:sec/km) or speed (km/h) to automatically calculate your running time. Predicted times for 5 km, 10 km, half and full marathon are listed too.
Input
Enter your distance and either a pace (min:sec/km) or a speed (km/h) to calculate your finishing time.
km
How to enter your speed
min
sec
/km
Result
Finishing time (10.0 km)
1:00:00
(h:mm:ss)
Distance
10.0 km
Pace
6'00"/km
Speed
10.0 km/h
Predicted times for standard distances at the same pace
| Distance | Predicted time |
|---|---|
| 5 km(5.0 km) | 30:00 |
| 10 km(10.0 km) | 1:00:00 |
| Half(21.1 km) | 2:06:35 |
| Full(42.2 km) | 4:13:10 |
How it works
- Finishing time in seconds is calculated as distance (km) x pace (sec/km). When you enter a pace, the minutes and seconds are first converted to seconds before applying this formula.
- When you enter a speed (km/h), the pace (sec/km) is first found as 3600 / speed (km/h), then the same formula gives the finishing time.
- Pace and speed are converted to each other and both are shown. Speed to pace uses 3600 / speed (km/h); pace to speed uses 3600 / pace (sec/km).
- Predicted times for the standard distances (5 km, 10 km, half marathon 21.0975 km, full marathon 42.195 km) assume a constant pace and are calculated as distance (km) x pace (sec/km).
- Results are theoretical values that assume you hold a steady pace. Your actual time will vary with course elevation, temperature, condition and other factors.
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Running Time Calculator