How to Use the Pace Calculator
Select what you want to calculate: pace, time, or distance. Enter any two values and the calculator will instantly compute the third. Use race preset buttons to quickly set common distances.
Pace Calculation Formulas
- Pace = Time / Distance (e.g., 25 minutes / 5 km = 5:00 min/km)
- Time = Pace x Distance (e.g., 5:00 min/km x 10 km = 50:00)
- Distance = Time / Pace (e.g., 30 minutes / 6:00 min/km = 5 km)
- Speed (km/h) = 60 / Pace (min/km)
- Pace (min/mi) = Pace (min/km) x 1.60934
Common Race Distances
- 5K - 5 kilometers (3.107 miles)
- 10K - 10 kilometers (6.214 miles)
- Half Marathon - 21.0975 kilometers (13.109 miles)
- Marathon - 42.195 kilometers (26.219 miles)
- Mile - 1.609 kilometers
Training Pace Zones
Runners typically train at different paces for different purposes:
- Easy / Recovery pace: 60-75% of max effort. Conversational pace used for most training runs.
- Tempo / Threshold pace: 80-85% effort. Comfortably hard pace you could sustain for about an hour.
- Interval pace: 90-95% effort. Used for speed work with recovery periods between repeats.
- Race pace: Your target pace for a specific race distance.
- Sprint pace: 95-100% effort. Short bursts used for speed development.
Example Pace Calculations
- A 25-minute 5K = 5:00 min/km (8:03 min/mi) = 12.0 km/h
- A 50-minute 10K = 5:00 min/km (8:03 min/mi) = 12.0 km/h
- A 1:45:00 half marathon = 4:58 min/km (8:00 min/mi) = 12.1 km/h
- A 3:30:00 marathon = 4:58 min/km (8:00 min/mi) = 12.1 km/h
- A 4-minute mile = 2:29 min/km = 24.1 km/h
