Work out your running pace and speed from a distance and time.
Instant and private in your browser.
How is running pace calculated?
Pace = total time ÷ distance, and speed = distance ÷ time. The calculator converts between kilometres and miles automatically (1 mile = 1.60934 km). For example, running 10 km in 50:00 gives a pace of 5:00 per km (about 8:03 per mile) and a speed of 12 km/h.
Understanding your result
Use it to plan race targets — for example, the pace you’d need to break a specific marathon time.
Formula and method
Pace = total time ÷ distance. Speed = distance ÷ time. The tool converts between kilometres and miles automatically (1 mile = 1.60934 km).
Assumptions and limitations
This is a mathematical calculation from the distance and time you enter, so its accuracy depends on your inputs. It reflects an average pace and does not account for terrain, weather, elevation or how effort varies across a run. Use it for planning and comparison rather than as a guarantee of race-day performance.
Worked example
10 km in 50:00 is a pace of 5:00 per km (about 8:03 per mile) and a speed of 12 km/h.
How to use this tool
- Enter the distance and choose km or miles.
- Enter your time as mm:ss or h:mm:ss.
- Press Calculate.
About the Running Pace Calculator
The Running Pace Calculator turns a distance and a finish time into your pace per kilometre and per mile, along with your average speed.
Who should use this tool
Runners and walkers who want to turn a distance and finish time into a pace per kilometre and mile, plus average speed. Useful for planning race targets, checking training splits, or working out the pace needed to hit a goal time over a set distance.
Benefits
- Converts distance and time into pace per km and mile
- Shows your average speed right alongside the pace
- Switches between kilometres and miles automatically
- Processes everything client-side for full privacy
Practical use cases
- Finding the pace needed for a target race time
- Checking your average pace from a training run
- Comparing splits in kilometres and miles
- Planning even pacing across a race distance
Frequently asked questions
How do I enter the time?
Use mm:ss for shorter runs (e.g. 22:30) or h:mm:ss for longer ones (e.g. 1:45:30).
What is the difference between pace and speed?
Pace is the time taken to cover a set distance, such as minutes per kilometre or mile, and lower is faster. Speed is the distance covered in a set time, such as kilometres per hour, and higher is faster. The tool shows both from the same distance and time, so you can use whichever you prefer.
Can I use this to plan even pacing for a race?
Yes. Enter your goal distance and target time, and the tool gives the pace you would need to average throughout. Aiming to hold that pace helps you avoid starting too fast. Remember it reflects an even average, while real races involve terrain and conditions that affect actual splits.