Running Pace Calculator
Enter your distance and total time to calculate your pace per mile and per kilometer.
Last updated: September 5, 2026
Frequently asked questions
How do I calculate running pace?
Divide your total time by your total distance. For a 5K in 28 minutes, pace per mile = 28 ÷ 3.1 ≈ 9:02 per mile.
How do I convert pace to speed?
Divide 60 by your pace in minutes per mile (or km) to get mph (or km/h). A 9:00/mile pace is 60 ÷ 9 ≈ 6.7 mph.
How do I use pace to predict a race finish time?
Multiply your per-mile or per-km pace by the total race distance - if your training pace is 9:00/mile, a 13.1-mile half marathon at that same pace would finish in roughly 1:58:00, though most runners' actual race pace differs somewhat from training pace.
What pace do I need to run a sub-2-hour half marathon?
A sub-2-hour half marathon (13.1 miles) requires an average pace of about 9:09 per mile or faster. This calculator converts between total time, distance, and pace, so you can plug in any race distance and target time to find the required pace.
How do I convert a mile pace to a kilometer pace?
Multiply your per-mile pace by 0.621 (since 1 km = 0.621 miles) - a 9:00/mile pace works out to about 5:36/km.
What's an example pace calculation for a marathon?
Finishing a marathon (26.2 miles) in 4 hours means an average pace of 240 minutes ÷ 26.2 miles ≈ 9:10 per mile.
Why is my race pace usually different from my training pace?
Race-day factors like taper rest, crowd energy, and adrenaline often let runners hold a faster pace than typical training runs, while conditions like heat or hills can slow it down - this calculator shows the math between time, distance, and pace, but doesn't predict race-day performance itself.