How to calculate running pace
Pace is your time divided by your distance. Run 5 km in 27 minutes and your pace is 27 ÷ 5 = 5:24 per km (about 8:41 per mile). Enter any two of distance, time and pace and the calculator works out the third, and also predicts finish times for common race distances.
Race distances at a glance
- 5K: 5 km / 3.11 miles
- 10K: 10 km / 6.21 miles
- Half marathon: 21.0975 km / 13.11 miles
- Marathon: 42.195 km / 26.22 miles
Pacing tips
Most easy runs should feel conversational, roughly 60–90 seconds per km slower than 5K race pace. For races, aim for even or slightly negative splits – starting too fast is the most common reason for slowing badly in the final third. More in our guide on running pace for 5K, 10K and half marathon.
Frequently asked questions
What is a good 5K time?
For beginners, 30–35 minutes is a solid first goal. Recreational runners often run 22–28 minutes. Age, experience and terrain matter a lot.
How do I convert min/km to min/mile?
Multiply the pace per km by 1.609. For example 5:00 per km is about 8:03 per mile.
Are race predictions accurate?
They assume similar fitness and training for the longer distance. Treat them as a reasonable target, not a guarantee.
Results are estimates for general information and are not medical advice. See our disclaimer. Talk to a doctor or registered dietitian before making major changes to your diet or training.