Protect the opening kilometres
Small early pace errors can become expensive later. Start controlled and let the race come to you.
02 Free pace and splits tool
Running pace calculator for every race distance.
Turn a goal time into pace per kilometre, pace per mile and even race splits, or start with pace and calculate your finish time.
5K to marathonCustom distanceInstant
Calculate your pace Your target
Enter your goal.
Choose a distance, then calculate from either finish time or pace.
Use the result well
A target pace is a starting point.
The calculator uses even pacing. Hills, heat, wind, congestion and aid stations may make even effort more useful than forcing identical splits.
Use lap pace carefully
GPS can drift around buildings, trees and bends. Compare watch pace with official course markers.
Adjust for the course
On rolling routes, keep effort steadier and allow pace to move naturally uphill and downhill.
Useful questions
Running pace calculator questions
How is running pace calculated?
Pace is total time divided by distance. The calculator converts the result into minutes per kilometre and minutes per mile, then builds cumulative even splits.
What pace do I need for a two-hour half marathon?
A two-hour half marathon requires an average pace of about 5:41 per kilometre or 9:09 per mile on an accurately measured course.
Should every race split be exactly even?
Not always. Even splits are a useful baseline, but hills, wind, heat, congestion and aid stations can make even effort more appropriate than forcing the same pace throughout.
Can I use the calculator for a custom distance?
Yes. Choose Custom distance, enter kilometres or miles and calculate from either your target finish time or planned pace.