Free running tools
Train smarter, not just harder.
Fast, no-signup calculators for runners — pace, race-time prediction and calories. Built for your 5K, 10K, half and full marathon goals.
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Pace Calculator
Find your pace and speed from any distance and time. Switch km/miles.
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Race Time Predictor
Predict your 5K, 10K, half or marathon time from a recent result.
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Calories Burned
Estimate calories burned running, based on your weight and effort.