Running Pace Calculator
Enter your distance and finish time to get your pace per kilometre and mile, your speed, and predicted finish times for 5K, 10K, half and full marathon.
Running pace calculator
Pace, speed and race-time predictions.
Predictions assume an even pace; real races usually slow over distance.
How running pace works
Pace is the time it takes you to cover one unit of distance — usually a kilometre or a mile. It is simply your total time divided by your distance. Runners think in pace rather than speed because it is easy to apply to a race: hold 5:00 per km and you know a 10K will take about 50 minutes.
Pace = time ÷ distance. A 5K in 30 minutes is 6:00 min/km (or about 9:39 min/mile), which is a speed of 10 km/h. Hold that pace and a marathon would take roughly 4 hours 13 minutes.
Pace, time and speed at a glance
| Pace (min/km) | Speed | 5K time |
|---|---|---|
| 4:00 | 15.0 km/h | 20:00 |
| 5:00 | 12.0 km/h | 25:00 |
| 6:00 | 10.0 km/h | 30:00 |
| 7:00 | 8.6 km/h | 35:00 |
Predicting your race times
If you can hold a steady effort, your finish time for any distance is your pace multiplied by that distance. The calculator projects your 5K, 10K, half marathon and full marathon from the pace you enter. In reality most runners slow slightly over longer distances, so treat the marathon figure as an even-effort best case and build in a small buffer. To plan training around your weight, our BMI calculator sits alongside this nicely.
Frequently asked questions
How do I calculate running pace?
Pace is your total time divided by the distance. For 5 km in 30 minutes, the pace is 30 ÷ 5 = 6 minutes per kilometre. The calculator does this for you and also converts to minutes per mile.
What is a good 5K pace?
A typical recreational runner finishes a 5K in 25 to 35 minutes, a pace of around 5 to 7 minutes per kilometre. 'Good' is personal — improving your own time matters more than comparing to others.
How is marathon finish time predicted?
If you hold a steady pace, finish time is simply pace multiplied by distance. Real marathons usually slow a little over the distance, so treat the prediction as a best-case for an even effort.
What is the difference between pace and speed?
Pace is time per distance (minutes per km or mile) and is what runners usually quote. Speed is distance per time (km/h or mph). A pace of 6 min/km equals a speed of 10 km/h.
Can I use miles instead of kilometres?
Yes. Enter your distance in miles or kilometres and the calculator shows pace in both minutes per kilometre and minutes per mile, plus your speed in km/h and mph.