Running Pace Calculator
Calculate running pace per km or mile from distance and time, plus predicted times for 5K, 10K, half and full marathon.
100% free No signup Private & offline-ready Works in your browser
About the Running Pace Calculator
Enter how far you ran and how long it took to get your pace per kilometre and per mile, and your average speed. Race predictions use Peter Riegel's formula, which estimates how your pace changes over longer distances.
Frequently asked questions
Is the Running Pace Calculator free?
Yes. The Running Pace Calculator on Apex Tool Station is 100% free with no signup and no watermark. Browser tools have no usage limits.
Are my files or data uploaded to a server?
No. Everything runs locally in your browser using JavaScript. Your files and text never leave your device, which makes it safe for private documents.
Does it work on mobile?
Yes. The tool works on any modern browser on Android, iPhone, Windows, Mac and Linux.