Tools
Free, data-driven tools to analyse your running performance.
Percentile Calculator
Enter your race time for any distance — 5K to marathon — and instantly see where you rank among runners worldwide.
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Pace Degradation Calculator
Enter your target time and distance to visualise how pace changes per kilometre across three pacing strategies.
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Interval Pace Calculator
Enter a recent race time and get your personalised training paces for every interval type — from sprints to easy runs.
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Race Time Predictor
Predict your finish time at any distance from a known race result using the Riegel formula with percentile rankings.
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