How do I calculate running pace?

Divide your total time by the distance covered. For example, 50 minutes over 10 kilometers is a pace of 5:00 per kilometer.

How many miles are in a 5K, 10K, half marathon, and marathon?

A 5K is 3.11 miles, a 10K is 6.21 miles, a half marathon is 13.11 miles, and a marathon is 26.22 miles.

Running Pace Calculator

Q: What is the difference between pace and speed?

Pace is the time needed to cover one unit of distance, usually minutes per kilometer or mile. Speed is distance covered per unit of time, such as kilometers per hour.

Know any two of pace, time, or distance — we'll solve for the third value instantly.

Distance (km)

Hours

Minutes

50:00 total — 5:00/km pace

Understanding Pace & Splits

Pace measures the minutes and seconds it takes to cover one kilometer or mile (e.g., 5:00/km is equivalent to 8:03/mile). Steady split targets are essential for pacing yourself during long endurance runs to avoid "hitting the wall" (depleting muscular glycogen prematurely). Finding your optimal pace is the difference between completing a marathon strong or walking the final miles.

Metric vs. Imperial Pacing

Most of the global running community tracks workouts in kilometers, while runners in the US and UK often think in miles. Quick pacing conversions: a 5K race is 3.11 miles, a 10K is 6.21 miles, a Half Marathon is 13.11 miles, and a full Marathon is 26.22 miles. Using standard pacing metrics helps maintain pacing group consistency during competitive events.

How do you calculate running pace?

Divide total time by distance. For example, 50 minutes over 10 kilometers is 5:00 per kilometer. Use the calculator to solve for any missing value, then compare likely race times with our race time predictor.

Pace vs. speed: what is the difference?

Pace is the time needed to cover one unit of distance, typically minutes per kilometer or mile. Speed is distance covered per unit of time, such as kilometers per hour. Runners often use pace because it makes target splits easy to follow.