Pace Calculator
Calculate your running pace, speed and finish time based on distance and time. For running, pace is usually expressed as minutes per kilometer (min/km) or minutes per mile (min/mile).
Input
Result
| Split (km) | Split time | Cumulative |
|---|---|---|
| 1 km | 06:00 | 06:00 |
| 2 km | 06:00 | 12:00 |
| 3 km | 06:00 | 18:00 |
| 4 km | 06:00 | 24:00 |
| 5 km | 06:00 | 30:00 |
What is running pace?
Running pace is the time it takes to cover one unit of distance. It is most commonly expressed as minutes per kilometer (min/km) or minutes per mile (min/mile). For example, a pace of 5:00 min/km means each kilometer takes five minutes.
How pace is calculated
The basic formula is: pace = time ÷ distance. If you run 10 km in 50:00, your pace is 50:00 ÷ 10 = 5:00 min/km. Speed is the inverse of pace: speed (km/h) = 3600 ÷ pace (s per km). To convert units, remember that 1 mile = 1.60934 km.
Examples
- 5 km in 25:00 → 5:00 min/km (12.0 km/h)
- 10 km in 45:00 → 4:30 min/km (13.3 km/h)
- Half marathon (21.0975 km) in 1:45:00 → ≈ 4:59 min/km
How to use this calculator
- Change time to update your pace.
- Change distance (or unit) to update time.
- Change pace to update time.
The splits table shows per‑kilometer splits and a final partial split if your distance is not an integer. The Pace analysis tab shows how small changes in pace (±5–10%) affect total finish time.
Common race distances
- 5 km • 10 km • 15 km • 20 km
- Half marathon (21.0975 km) • Marathon (42.195 km)
- 1 mile (1.60934 km) • 400 m • 800 m
Tips
- Use min/km or min/mile consistently to track progress.
- Compare training vs race pace to set realistic goals.
- Long runs are slower; intervals and tempo runs are faster.