Tool
Pace calculator
How fast do you need to run for a 50-minute 10K? Fill in two of distance, time and pace, and the calculator works out the third – for running, cycling and swimming.
How to use the pace calculator
- Choose the sport: running (pace per km), cycling (speed in km/h) or swimming (pace per 100 m).
- Choose what to work out: pace, time or distance.
- Fill in the other two, for example the distance and your goal time, and press Calculate.
- For running you also get the split for every kilometre, so you know where to be during the race.
Example: 10 km in 50 minutes is 5:00 per km. A half marathon in 1:45:00 is 4:59 per km, and a 4-hour marathon is 5:41 per km.
Pace or speed?
Runners usually count in pace: how many minutes a kilometre takes. Cyclists count in speed: how many kilometres they cover in an hour. Swimmers count pace per 100 metres. It is the same thing, the other way round: 12 km/h is 5:00 per km, because 60 minutes divided by 12 is 5.
The pace you can hold in a race depends on your fitness, the course and the day. To see what you could run over another distance, try the race time predictor.
Common questions
Common questions about pace
How do I work out my running pace?
Divide the time by the distance. 10 km in 50 minutes is 5 minutes per km. The calculator does it for you and shows the split for every kilometre.
How do I convert km/h to minutes per km?
Divide 60 by the speed. 12 km/h is 5:00 per km, and 10 km/h is 6:00 per km. Choose cycling in the calculator to work in km/h.
What pace do I need for a sub-50 10K?
Faster than 5:00 per km. Choose Time, enter 10 km and 4:59 per km, and you will see the finish time and the splits.
Is anything I type stored?
No. Everything is calculated in your browser and nothing is sent or stored.
Want to reach that time?
TriQuest builds a training plan for your race, with sessions at the right pace around your week.