Running Pace Calculator
Convert between pace, finish time, and distance using the standard relationship pace = time ÷ distance. Works for running, walking, and treadmill sessions in kilometers or miles.
How the formulas work
Average pace is total time ÷ distance (min/km or min/mi). Finish time is pace × distance. Distance is time ÷ pace. Average speed is the inverse of pace: distance ÷ time (km/h or mph), or 60 ÷ pace-in-minutes.
Example: 5 km in 25:00 is a 5:00 /km pace (12 km/h). Race presets use standard road distances (5K, 10K, half marathon 21.0975 km / 13.1094 mi, marathon 42.195 km / 26.2188 mi). This is average pace only — it does not model hills, wind, fatigue, or interval structure, and it is not medical advice.
5 km in 25:00 → 5:00 min/km (12.00 km/h). Conversion uses 1 mi = 1.609344 km.
| Distance | Time |
|---|---|
| 400 m | 2:00 |
| 1 km | 5:00 |
| 5K | 25:00 |
| 10K | 50:00 |
| Half marathon | 1:45:29 |
| Marathon | 3:30:59 |
Pair pacing with conditioning tools
Use pace for steady cardio blocks, heart-rate zones for intensity caps, and the library demos below for treadmill or rowing sessions.