Calculating your running pace: time, distance, speed
Coach review in progress.
Pace in seconds per kilometer is time in seconds divided by distance in kilometers. Speed in km/h is distance divided by time in hours. The distances used for the half marathon and the marathon are 21.0975 km and 42.195 km. In miles, the half marathon is 13.1 miles and the marathon 26.2 miles; the form on this page also gives pace per mile and speed in miles per hour.
The calculation runs in your browser. No data is sent or stored.
Example: 10 km (6.2 miles) in 50 min 00, i.e. 3 000 seconds. Pace = 3 000 / 10 = 300 seconds per kilometer, i.e. 5 min 00. Speed = 12 km/h. In miles, the same pace is about 8 min 03 per mile and the speed about 7.5 mph.
Calculate
Three directions: distance and time give pace and speed; distance and pace give time; time and pace give distance. Seconds are rounded to the nearest whole number for a displayed time. Distance is rounded to the hundredth of a kilometer.
Pace table
At 5 min 00 per kilometer (300 seconds): 5 km in 25 min 00, 10 km in 50 min 00, 21.0975 km in 1 h 45 min 29 s (6 329 seconds), 42.195 km in 3 h 30 min 59 s (12 659 seconds).
At 6 min 00 per kilometer (360 seconds): 5 km in 30 min 00, 10 km in 60 min 00, 21.0975 km in 2 h 06 min 35 s (7 595 seconds).
| Pace | 5K (3.1 mi) | 10K (6.2 mi) | Half marathon (13.1 mi) | Marathon (26.2 mi) |
|---|---|---|---|---|
| 8 min 03 s per mile | 1500 s | 3000 s | 6329 s | 12659 s |
| 9 min 39 s per mile | 1800 s | 3600 s | 7595 s | 15190 s |
Training pace
No beginner's pace is set here: it depends on the terrain, the heat and the person. A pace at which you can still talk is a marker for an easy session, not a medical norm. For a race target, the table above converts a pace into a time, without saying it is the right one.
The result is a clock calculation. It does not say which pace suits you.
Frequently asked questions
What pace for a beginner?
This calculator gives no standard pace. It converts a time, a distance and a pace. Choosing a pace at which conversation remains possible is a common marker for an easy session, not a threshold published on this page.
How do you convert min/km to km/h?
Speed (km/h) = 3 600 / pace in seconds per kilometer. A pace of 300 seconds (5 min 00) gives 3 600 / 300 = 12 km/h.
Sources
Read also
Pace does not measure VO2max. The VO2max calculator, on another page, estimates oxygen uptake from a test or heart rates. It is not the same thing as a pace. Open the VO2max calculator