Running Pace Calculator & Race Time Predictor
Calculate running pace, splits, speed and race predictions for 5K, 10K, half marathon and marathon. Free tools with instant results - no sign-up required.
Running Pace Calculator
Calculate your pace per km and mile, view split times, and predict race performances.
All Running Tools
Explore our complete collection of running calculators and tools.
Running Pace Calculator
Calculate your pace per km and mile from any distance and time. Get split tables and race predictions.
Marathon Pace Calculator
Find your ideal marathon pace and get detailed split times for 42.195 km.
5K Pace Calculator
Calculate your 5K pace and predict your performance at longer distances.
10K Pace Calculator
Find your 10K pace and see predicted times for half marathon and marathon.
Race Time Predictor
Predict your race times using the Riegel formula. Enter a known result to estimate other distances.
VO2max Calculator
Estimate your VO2max from a recent race result and see how you compare.
Heart Rate Zone Calculator
Calculate your 5 heart rate training zones from your max or resting heart rate.
Running Pace Calculator FAQ
Frequently Asked Questions
All calculations are performed instantly in your browser. No sign-up required.