🏃 Running Pace Calculator
Enter any two of pace, time and distance, and get the third, with your pace in both min/km and min/mile, and your speed in km/h and mph.
Pace
5:00 /km
8:03 /mi
Speed
12.00 km/h
7.46 mph
Pace = time ÷ distance. Enter a marathon time to see the pace you need to hold, or a pace to project a finish time. 🔒 In your browser.
How the running pace calculator works
Pace is simply time divided by distance. Give the tool a distance and a finish time and it returns your pace and speed; give it a distance and a target pace and it projects your finish time; give it a time and a pace and it works out how far you'd go. Times are entered as mm:ss or h:mm:ss, and the distance presets cover the common race distances.
Use it to find the pace you need to hit a goal time, enter the marathon distance and your target time to see the min/km you must hold. Race pace and training pace differ, so treat a projected time as a best-case even effort.
Frequently asked questions
How do I calculate running pace?
Divide your time by the distance. For 10 km in 50 minutes, pace = 50 ÷ 10 = 5:00 per km (about 8:03 per mile). Enter the distance and time and the tool shows both, plus your speed.
What pace do I need for a sub-4-hour marathon?
A 4-hour marathon is about 5:41 per km (9:09 per mile). Enter the marathon distance (42.195 km) and a 4:00:00 target time and the tool gives the exact pace to hold.
How do I convert between min/km and min/mile?
A mile is 1.609 km, so a per-mile pace is about 1.609 times the per-km pace. This tool shows both at once; there's also a dedicated pace converter for speeds.
What is a good running pace?
It's very individual. Many recreational runners cover 5K around 6:00-7:00 per km (about 9:40-11:15 per mile); trained runners are faster. Use your own recent times as the baseline and aim to improve gradually.
How do I use pace to hit a goal time?
Enter the race distance and your goal finish time in "find pace" mode, the tool returns the even pace you'd need to hold the whole way. Then practise running at that pace in training.