Running Pace Calculator
Enter distance and time to find your pace.
About this calculator
Pace Calculator has three tabs. Find Pace takes a distance and a finish time and returns your pace per km, your speed in km/h and mph, and a kilometre-by-kilometre split table. Find Time takes a distance and a pace and returns the finish time. Find Distance takes a time and a speed and returns how far you will go.
The split table is the part runners use on race day. Note the cumulative time at 5 km and 10 km, and you can check at each marker whether you are on target. Choose km or miles, or pick a standard race from the list.
How to use it
- Pick a tab: Find Pace, Find Time or Find Distance.
- Enter the distance (or choose a race), plus the time, pace or speed that tab asks for.
- Read the result and the split table underneath.
Core formulas
Pace = Time ÷ Distance, Time = Pace × Distance and Distance = Speed × Time. Speed in km/h is 60 ÷ pace in minutes per km, and in mph it is km/h divided by 1.609.
Worked example
10 km in 55 minutes
| Pace | 5:30 per km |
| Speed | 10.91 km/h (6.78 mph) |
| 5 km split | 27 min 30 s |
| 10 km finish | 55 min 0 s |
At 5:30 per km a half marathon takes about 1 hour 56 minutes. Even splits are usually the best strategy over 10 km and longer.
Tips and common mistakes
- Aim for even or slightly negative splits.
- Judge pace over a full kilometre. Watches fluctuate moment to moment.
- Use the split table as a race-day cheat sheet.
- Train at several paces: easy, tempo and intervals.
- Convert between km and miles so you can use any race's markers.
Frequently asked questions
What is a good running pace?
For beginners 6:30 to 7:30 per km; for experienced runners 4:30 to 5:30.
How do I convert km/h to pace?
Divide 60 by the speed in km/h to get minutes per km.
How do I find my marathon pace?
Divide your target time by 42.195 km.
What does a negative split mean?
Running the second half faster than the first.
Can I use it for cycling?
Yes, through the Find Distance tab with speed in km/h.
Is treadmill pace the same as outdoors?
Roughly. A 1% incline approximates outdoor effort.