Calculate pace
Pace = Time ÷ Distance
Use distance and elapsed time to calculate average pace.
Running Pace Calculator
Calculate running pace, finish time, or distance for 5K, 10K, half marathon, marathon, and custom runs. Compare pace per mile and per kilometer, average speed, and mile or kilometer splits.
Enter a target finish time to find the average pace required, or enter a pace to calculate a same-pace finish time. Race times are mathematical estimates, not predictions of actual performance.
Region
Choose the default distance, pace, and split units. Switching regions clears the entered values.
What do you want to calculate?
Choose which one of pace, finish time, or distance the calculator should solve.
Distance
Choose a common race distance or enter your own distance.
Elapsed time
Enter the total running time. Leave unused leading fields blank or enter 0.
Split table
Choose whether the result table should show mile or kilometer splits at the calculated average pace.
The calculator uses the exact conversion 1 mile = 1.609344 km. Pace, time, and distance are calculated mathematically; no fitness, fatigue, terrain, weather, or elevation model is applied.
How does a running pace calculator work?
A running pace calculator uses any two of distance, elapsed time, and pace to calculate the third. It can also convert between min/mile and min/km, show average speed, and generate mile or kilometer splits.
🧮 How the Running Pace Calculator Works
Running pace, elapsed time, and distance are directly related. If any two are known, the third can be calculated. FigureNorth uses seconds and kilometers internally, then converts the result to both metric and imperial running units.
Calculate finish time
Time = Pace × Distance
Use a target pace and distance to calculate a same-pace finish time.
Calculate distance
Distance = Time ÷ Pace
Use elapsed time and average pace to calculate distance covered.
To convert min/mile to min/km, first express the pace in seconds: seconds per km = seconds per mile ÷ 1.609344. For the reverse, seconds per mile = seconds per km × 1.609344. The exact distance relationship is 1 mile = 1.609344 km.
🏁 Common Race Goal Paces
Select 5K, 10K, half marathon, marathon, or a custom distance, then enter a target finish time to calculate the average pace required. Enter a pace instead to calculate the same-pace finish time.
| Goal | Average pace / km | Average pace / mile |
|---|---|---|
| 25:00 5K | 5:00 /km | 8:02.8 /mi |
| 30:00 5K | 6:00 /km | 9:39.4 /mi |
| 50:00 10K | 5:00 /km | 8:02.8 /mi |
| 60:00 10K | 6:00 /km | 9:39.4 /mi |
| 1:45 Half Marathon | 4:58.6 /km | 8:00.6 /mi |
| 2:00 Half Marathon | 5:41.3 /km | 9:09.2 /mi |
| 3:30 Marathon | 4:58.6 /km | 8:00.6 /mi |
| 4:00 Marathon | 5:41.3 /km | 9:09.2 /mi |
These are constant-average-pace calculations, not predictions that a runner can sustain the pace. Displayed paces are rounded to the nearest tenth of a second; the calculator retains unrounded values.
🔁 Running Pace Conversion Chart
Compare pace per kilometer with pace per mile and equivalent speed in km/h and mph. This chart uses the exact conversion 1 mile = 1.609344 km.
| min/km | min/mile | km/h | mph |
|---|---|---|---|
| 4:00 | 6:26.2 | 15 | 9.32 |
| 4:30 | 7:14.5 | 13.33 | 8.28 |
| 5:00 | 8:02.8 | 12 | 7.46 |
| 5:30 | 8:51.1 | 10.91 | 6.78 |
| 6:00 | 9:39.4 | 10 | 6.21 |
| 6:30 | 10:27.6 | 9.23 | 5.74 |
| 7:00 | 11:15.9 | 8.57 | 5.33 |
Pace is displayed to the nearest tenth of a second and speed to two decimal places. Rounding is for display only.
🧪 Worked Running Examples
Example 1 — 5K in 25 minutes
- Distance
- 5 km
- Elapsed time
- 25:00
- Pace
- 5:00 /km
- Equivalent pace
- 8:02.8 /mi
- Average speed
- 12.00 km/h
25 minutes ÷ 5 kilometers = 5 minutes per kilometer.
Example 2 — 10K at 5:00/km
- Distance
- 10 km
- Pace
- 5:00 /km
- Finish time
- 50:00
- Equivalent pace
- 8:02.8 /mi
- Average speed
- 12.00 km/h
A constant 5:00/km pace over 10 kilometers gives a 50-minute finish time.
Example 3 — 1 hour at 8:00/mile
- Elapsed time
- 1:00:00
- Pace
- 8:00 /mi
- Distance
- 7.5 mi
- Metric distance
- 12.07008 km
One hour contains 7.5 eight-minute miles.
Example 4 — Marathon at 4:00/km
- Distance
- 42.195 km
- Pace
- 4:00 /km
- Finish time
- 2:48:46.8
This is a constant-pace calculation and does not model fatigue or race conditions.
⚡ Pace vs. Speed
Running pace
Pace tells you how much time it takes to cover one mile or one kilometer. A lower time per mile or kilometer means a faster average pace. Runners commonly use pace for workouts and race planning because it maps directly to split times.
Running speed
Speed tells you how much distance is covered per hour. The same run can be described as 8:00 per mile or 7.5 mph. FigureNorth shows both mph and km/h so the speed result can help compare an outdoor pace with a treadmill speed setting. It does not verify treadmill calibration or model incline or effort.
🏁 Common Running Distances
The preset buttons use fixed standard distances. You can always choose Custom for a training route, track workout, trail run, or another race length.
| Distance | Kilometers | Miles |
|---|---|---|
| 1 Mile | 1.6093 km | 1 mi |
| 5K | 5 km | 3.1069 mi |
| 10K | 10 km | 6.2137 mi |
| 10 Mile | 16.0934 km | 10 mi |
| Half Marathon | 21.0975 km | 13.1094 mi |
| Marathon | 42.195 km | 26.2188 mi |
📌 Planning Assumptions and Limits
Constant average pace
Same-pace race times and splits assume one constant average pace from start to finish. They are mathematical planning values, not a model of how pace changes during a real run.
No performance prediction
The calculator does not use fatigue curves, prior race results, age grading, VO2 max, heart rate, training history, or Riegel prediction. Longer-distance results therefore should not be read as performance forecasts.
No terrain or weather adjustment
Elevation, hills, trail surface, wind, heat, humidity, altitude, and treadmill calibration are outside this calculation.
Technical input limits
Input limits are used to prevent invalid or impractically large calculations. They are not statements about what counts as a normal, safe, or recommended running pace.
📚 Methodology and Distance References
World Athletics — Book of Rules
World Athletics publishes the Competition and Technical Rules used for road-running standards, including recognized road-race distances.
View source →World Athletics — Certified Road Events
The certified-road-events reference includes standard event categories such as 1 mile, 5K, 10K, half marathon, and marathon.
View source →FigureNorth uses its own direct pace/time/distance calculation and exact mile-to-kilometer conversion. Official race references are used for distance context, not for training or performance advice.
❓ Running Pace Calculator FAQ
What is a running pace calculator?
A running pace calculator converts between distance, elapsed time, and average pace. FigureNorth can calculate pace from distance and time, estimate finish time from distance and pace, or calculate distance from time and pace.
How do I calculate my running pace?
Divide elapsed time by distance. For example, a 25-minute 5K equals 5:00 per kilometer. The calculator also converts that result to pace per mile and average speed in both km/h and mph.
What pace do I need for a 5K or 10K goal time?
Choose Calculate pace, select 5K or 10K, and enter your target finish time. A 25-minute 5K or a 50-minute 10K requires an average pace of 5:00 per kilometer. To calculate finish time instead, enter the distance and pace. These are constant-average-pace calculations, not performance predictions.
How do I calculate half marathon or marathon pace?
Select Half Marathon (21.0975 km) or Marathon (42.195 km) in Calculate pace mode and enter your goal finish time. Divide that time by the selected distance to find the required average pace. Calculate finish time reverses the process using distance and pace. The Common Race Goal Paces table includes 1:45 and 2:00 half marathons and 3:30 and 4:00 marathons.
How do I convert min/mile to min/km?
The calculator converts pace using the exact relationship 1 mile = 1.609344 kilometers. A pace in seconds per mile is divided by 1.609344 to obtain seconds per kilometer; the reverse conversion multiplies by 1.609344.
What is the difference between running pace and speed?
Pace is time required to cover a unit of distance, such as 8:00 per mile. Speed is distance covered per unit of time, such as 7.5 mph. They describe the same movement from opposite directions.
What are running splits?
Splits show the time for successive mile or kilometer segments. FigureNorth uses the calculated average pace to build constant-pace splits and includes a final partial segment when the distance is not an exact whole number of miles or kilometers.
Can I calculate distance from running time and pace?
Yes. Choose Calculate distance and enter elapsed time plus your pace per mile or per kilometer. The calculator returns distance in both miles and kilometers along with equivalent pace and speed.
Are the race times on this calculator predictions?
No. They are constant-pace mathematical extrapolations. They show what common race distances would take at the same average pace, without modeling fatigue, fitness, terrain, weather, elevation, or race-day conditions.
Does the US or Canada setting change the calculation?
No. US and Canada use identical math. The region setting only changes the default distance, pace, and split units: miles and min/mile for US, kilometers and min/km for Canada.