Distance and time
Enter a race distance and finish time to estimate average pace per mile and per kilometer.
paceestimator.comRunning, walking, cycling
Pace estimator
Convert between distance, finish time, and pace. Get mile and kilometer pace, common race projections, and a split table for quick workout or race planning.
Pace calculator guide
How this pace estimator works
A pace estimator uses the relationship between distance, elapsed time, and pace. Add any two values and the calculator solves the third. It also converts pace per mile to pace per kilometer so you can compare training plans, treadmill workouts, and race goals without doing the unit math by hand.
Use it as a running pace calculator, walking pace calculator, cycling pace reference, or race pace calculator. Common distances are included for 5K, 10K, half marathon, marathon, 1 mile, 3 miles, and 5 miles.
Pace formula
Pace equals total time divided by distance. For example, 25 minutes over 5K is 5:00 per kilometer.
Distance and pace
Enter a goal pace with a distance to project finish time for a workout, time trial, or race.
Time and pace
Enter how long you plan to move and the pace you expect to hold to estimate distance covered.
Splits
Use the split table to see cumulative elapsed time at each mile or kilometer through the finish.
Pace chart examples
Common goal paces
Use these examples as quick checks before adjusting the calculator. They are rounded to the nearest second, so official race timing can differ slightly by course distance and measurement standards.
25 minute 5K
A 25:00 5K is 5:00 per kilometer.
50 minute 10K
A 50:00 10K uses the same 5:00 per kilometer pace.
2 hour half marathon
A 2:00:00 half marathon is about 5:41 per kilometer.
4 hour marathon
A 4:00:00 marathon is about 5:41 per kilometer.
5:00 per kilometer
Running 5:00 per kilometer projects to about 25:00 for 5K and 50:00 for 10K.
6:00 per kilometer
Running 6:00 per kilometer projects to about 30:00 for 5K and 1:00:00 for 10K.
Pace estimator questions
These quick answers cover common running pace calculator searches, including 5K pace, marathon pace, and mile-to-kilometer conversion.
How do I use a pace estimator?
Enter any two values: distance, time, or pace. The estimator calculates the missing value and converts your pace per mile and per kilometer.
What pace is a 25 minute 5K?
A 25 minute 5K is about 8:03 per mile or 5:00 per kilometer. Small rounding differences can happen because a 5K is 3.10686 miles.
What marathon time is an 8 minute mile pace?
At 8:00 per mile, a marathon finish time is about 3:29:45 for the standard 26.2188 mile distance.
How do mile and kilometer pace convert?
One mile is 1.609344 kilometers. Pace per kilometer is therefore faster numerically than pace per mile for the same effort.