5K pace calculator
25:00 finish
5:00/km · 8:03/mile
FREE RUNNING TOOL
Free race
pace calculator.
Find your 5K, 10K, half-marathon or marathon pace in minutes per mile and kilometer. Calculate finish times and race splits—free, with no signup.
Your numbers
Choose a distance and enter a finish time to see your pace.
FIND YOUR STARTING POINT
Popular race pace goals
Choose a goal below to load the calculator. These are examples, not recommended targets for every runner.
10K pace calculator
1:00:00 finish
6:00/km · 9:39/mile
Half-marathon pace calculator
2:00:00 finish
5:41/km · 9:09/mile
Marathon pace calculator
4:00:00 finish
5:41/km · 9:09/mile
What these numbers mean
Average pace is finish time divided by distance. The splits assume the same speed throughout. They are a calculation, not a prediction of fitness or a personalized race strategy.
For example, a 30-minute 5K averages 6:00 per kilometer, or about 9:39 per mile. Hills, conditions, and your experience can affect how you approach a race.
Running pace, explained
How do I calculate my running pace?
Divide your finish time by your race distance. A 30-minute 5K is 30 ÷ 5 = 6 minutes per kilometer. To find a finish time instead, multiply pace by distance. This calculator does both and converts between miles and kilometers.
What pace do I need for a 25-minute 5K?
Average 5:00 per kilometer, or approximately 8:03 per mile, to cover 5 kilometers in 25 minutes. Select 5K and enter your own goal time to calculate a different target.
What pace is a two-hour half marathon or four-hour marathon?
Both average approximately 5:41 per kilometer or 9:09 per mile. The half marathon is 21.0975 km and the marathon is 42.195 km. Displayed paces are rounded; use the finish-time calculation for precise splits.
Can this calculator predict my race time?
It calculates the time for a distance at a given pace. It does not predict whether you can maintain that pace. Your training, the course, and race-day conditions matter.
Keep your splits handy: use “Print or save these splits” after calculating, or bookmark this page for your next race.
A pace is a number.
A plan is personal.
Bring your goal and your starting point. Coach O builds your training around you.
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