How to predict a finish time
Use a pace you can realistically hold for the full distance.
1
Choose a realistic pace
Use a recent race or a tempo run, not your best single kilometre.
2
Enter the race distance
Keep the distance unit consistent with the pace unit.
3
Add a course margin
Allow extra time for hills, heat or a crowded start.
What does this tool do?
If you know the pace you can hold, finish time is pace multiplied by distance. This calculator also converts the pace between kilometres and miles and reports average speed.
The Formula
Finish time = pace × distanceFrequently Asked Questions
How should I pace a hilly race?
Even effort is usually better than even pace: go easier uphill and use the descent without sprinting. The flat-pace prediction is only a baseline.
What is a negative split?
Running the second half faster than the first. It often produces a better finish than starting too quickly and fading, but it requires practice.