Running Pace Calculator

Work out your running pace and speed

Enter how far you ran and how long it took — or tap a 5K, 10K, half or marathon preset — and this calculator returns your pace in minutes per kilometre and minutes per mile, plus your average speed in km/h and mph. It updates instantly and runs entirely in your browser.

Using pace in training

Pace is the language of running plans. Most easy runs should feel conversational, while tempo and interval sessions target faster paces for shorter stretches. Knowing your current race pace helps you set realistic goals and pace evenly so you don't fade in the closing kilometres.

Chasing a fitness goal too? Check training heart-rate zones with the target heart rate calculator and your daily energy needs with the TDEE calculator.

A worked example

Suppose you run 10 km in 50 minutes. Dividing 50:00 by 10 gives a pace of 5:00 per kilometre, which converts to about 8:03 per mile and an average speed of 12 km/h (7.46 mph). Tap the Half preset and hold that same 5:00/km and you'd finish in about 1:45:30 — a quick way to sanity-check whether a goal time is realistic before race day.

Pacing strategy: don't go out too fast

The most common racing mistake is a fast first kilometre that you pay for later — a "positive split," where the second half is slower than the first. Most strong performances come from even splits (a steady pace throughout) or a gentle negative split (finishing faster than you started). Knowing your target pace lets you hold back early and have something left for the finish.

In training, only a portion of your running should be at race pace. Easy runs should feel conversational; tempo and interval sessions target faster paces for shorter stretches. Match that effort to your body with the target heart rate calculator, and fuel the mileage with the TDEE calculator.

Frequently asked questions