Running
Training calculators for runners, cyclists, swimmers and lifters — validated formulas from sports science literature.
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Running Pace Calculator
Calculate your running pace per kilometre and per mile from any distance and finish time, plus average speed and even 5K and 10K split times.
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Marathon Time Predictor
Predict your marathon, half marathon, 10K and 5K times from a recent race result using the Riegel formula T2 = T1 × (D2/D1)^1.06. Free and instant.