Running Pace Calculator

How This Calculator Works

Pace is the time it takes to cover one unit of distance — minutes and seconds per mile or kilometer — the standard way runners describe how fast they’re going. This calculator solves for whichever of pace, distance, or time you don’t already know, given the other two: find your pace from a run’s distance and finish time, find your finish time from a goal pace and distance, or find how far you went from your time and pace.

The Formula

$$\vC{\text{Distance}} = \frac{\vA{\text{Time}}}{\vB{\text{Pace}}}$$ $$\vA{\text{Time}} = \vC{\text{Distance}} \times \vB{\text{Pace}}$$ $$\vB{\text{Pace}} = \frac{\vA{\text{Time}}}{\vC{\text{Distance}}}$$

All three are the same underlying relationship (distance = speed x time, with pace being the inverse of speed), just solved for whichever value is missing.

Worked Example

Find my pace: a 10 km run finished in 50:00:

1. Pace: $\vA{\text{50:00}} \div \vC{10} = \vB{\text{5:00 per km}}$.
2. Speed: $\vC{10} \text{ km} \div \left(\vA{50} \div 60\right) \text{ h} = 12 \text{ km/h}$.

Find my finish time: running 5 km at a 6:00/km pace:

1. Time: $\vC{5} \times \vB{\text{6:00}} = \vA{\text{30:00}}$.

Find my distance: running for 30:00 at a 5:00/km pace:

1. Distance: $\vA{\text{30:00}} \div \vB{\text{5:00}} = \vC{6} \text{ km}$.