Running pace calculator
Calculate your pace per mile and per kilometer from your time and distance, your speed, and projected times for a 5K, 10K, half marathon and marathon.
Fix the highlighted fields to see your result.
- Speed
- —
- 5K
- —
- 10K
- —
- Half marathon
- —
- Marathon
- —
How it is calculated
Pace = Time ÷ Distance
One mile is exactly 1.609344 km. Projected times multiply your current pace by each distance.
Assumptions and limitations
- Assumes an even pace; terrain, weather and fatigue change the result.
- An informational training tool, not medical advice.
This tool is educational and provides estimates. It is not a credit offer or financial advice. Actual terms are set by each institution.
Frequently asked questions
How do I calculate my running pace?
Divide your total time by the distance. 25 minutes for 5 km is 5:00 per kilometer, or about 8:03 per mile.
How long is a marathon and a half marathon?
A marathon is 42.195 km (26.2 miles) and a half marathon is 21.0975 km (13.1 miles). A 5K is 5 km (3.1 miles) and a 10K is 10 km (6.2 miles).
How do I predict my finish time?
Multiply your pace by the race distance. Keep in mind that most runners slow down over longer distances, so a pace from a 5K is optimistic for a marathon.