Running Pace Calculator
Calculate running pace, speed and estimated finish times from your distance and elapsed time.
Pace per kilometre
How we calculated it
About the Running Pace Calculator
Runners usually think in minutes per mile or kilometre rather than kilometres per hour. This calculator converts distance and elapsed time into pace and can use a target pace to estimate a finish time.
Pace is an average. Hills, heat, wind, aid stations and fatigue can make individual kilometres or miles faster or slower even when the final average matches the target.
How to Use the Running Pace Calculator
- Enter the distance covered or planned and select the correct unit.
- Enter the elapsed time for a completed run, or enter the target pace if you are predicting a finish time.
- Choose pace per mile or kilometre according to the way you train or race.
- Calculate the average and compare it with recent realistic performance before setting a race target.
How the Calculation Works
Average pace = elapsed time ÷ distance. The calculator converts total time into seconds or minutes first so the division is performed consistently.
For finish-time prediction at a fixed pace, predicted time = target distance × pace after units are aligned.
Worked example
Running Pace Calculator Worked Example
10 km in 50 minutes
Pace = 50 ÷ 10 = 5 minutes per kilometre. At the same average pace, a 5 km run would take about 25 minutes and a half marathon would require a separate projection rather than assuming endurance is unlimited.
Result guide
Understanding Your Running Pace Calculator Result
Use average pace as a planning reference. Holding the same pace over a much longer distance may not be realistic, so longer-race predictions should consider endurance as well as arithmetic.
Before you rely on the answer
Assumptions and Limitations
- Distance and elapsed time describe the same run.
- Stopped time is included or excluded consistently.
- Terrain, weather and fatigue are not separately modeled.
Practical tip
Using This Result in Practice
For races, compare target pace with recent workouts of similar duration. A pace that is easy for 5 km may not be sustainable for a half marathon or marathon.
Related calculations
Useful Calculations to Continue With
If you want to project a longer race from a recent performance, use the Race Time Predictor rather than simple constant-pace multiplication.
Running Split Calculator — If you already know the target finish time and want checkpoint targets, use the Running Splits Calculator.
Common questions
Running Pace Calculator FAQ
What is the difference between pace and speed?
Pace is time per unit of distance, such as minutes per kilometre. Speed is distance per unit of time, such as kilometres per hour.
Should I use moving time or elapsed time?
Use moving time for pure running pace and elapsed time when stops are part of the event or route experience.
Can I use 5K pace to predict a marathon?
Simple multiplication usually overestimates what can be sustained. Use a race-prediction model or recent long-distance performance for a better estimate.