Running Pace Calculator
Calculate running pace, finish time, or distance for any run — 5K, 10K, half marathon, or full marathon.
Calculate
Solve for
Pace (from distance + time)
Finish Time (from distance + pace)
Distance (from time + pace)
km
Pace
Your Running Pace
6:00 /km
Finish Times at Your Pace
5K (5 km)
30:00
10K (10 km)
1:00:00
Half Marathon (21.0975 km)
2:06:35
Full Marathon (42.195 km)
4:13:10
About Running Pace
Pace vs Speed
Pace is the time taken to cover 1 km (or 1 mile). Speed is distance covered per hour. Runners use pace because it directly tells you how to control your effort during a race. A 6:00/km pace means 10 km/h.
Common race targets for beginners
5K: Under 40 minutes (8:00/km) is a great first target
10K: Under 1:10 (7:00/km) for first-timers
Half Marathon: Under 2:30 (7:06/km)
Full Marathon: Under 5 hours (7:06/km)
Pace training zones
Easy/Recovery: 70–80% of max HR — conversational pace
Tempo/Threshold: 80–90% max HR — comfortably hard
Interval: 90–100% max HR — hard efforts with recovery
Easy runs build your aerobic base — do 80% of your runs easy
🔒 All calculations happen in your browser — no data is sent to any server. Results are for informational purposes only.