Pace Calculator
Calculate your running pace per kilometre or mile from distance and time, your speed, and finish times for 5K, 10K, half marathon and marathon. Free.
- Pace per mile
- 8:51 /mi
- Speed
- 10.9 km/h · 6.8 mph
- 5K at this pace
- 27:30
- 10K at this pace
- 55:00
- Half marathon at this pace
- 1:56:02
- Marathon at this pace
- 3:52:04
Pace, speed and race times
Enter a distance and how long it took, and the calculator gives your pace per kilometre and per mile, your speed in km/h and mph, and what that pace means over common race distances. Use it to plan a goal race (enter the race distance and your target time to see the pace to hold), to compare a run in miles with one in kilometres, or to set treadmill speeds. Times can be typed as h:mm:ss, mm:ss or just minutes.
How to use it
- 1
Pick km or miles
Choose the unit your distance is in.
- 2
Enter distance and time
Type or tap a race distance, then the time, like 55:00 or 1:52:30.
- 3
Read your pace
See pace per km and mile, speed, and projected race times.
Frequently asked questions
How do I calculate running pace?
Divide your time by the distance. 50 minutes for 10 km is 5:00 per km, which is 8:03 per mile.
What pace do I need for a sub-2-hour half marathon?
5:41 per km, or 9:09 per mile. Enter 21.1 km and 1:59:59 to check.
Are the race times predictions?
They show the time at exactly the same pace. Most runners slow down over longer distances, so add a little for a realistic marathon target.
Is anything sent to a server?
No. Everything is calculated in your browser, and nothing you type is stored or sent anywhere.