Running Tools
Free tools for runners and coaches to calculate training metrics and optimize performance.
VMA Calculator (Maximum Aerobic Speed)
Calculate your Maximum Aerobic Speed (VMA) from a time trial or race performance. Essential for creating effective training plans.
Race Time Predictor (Riegel Formula)
Predict your race time based on a previous performance using the Riegel formula. Estimate your marathon time from a 10km or half-marathon result.
Heart Rate Zones Calculator (Karvonen)
Calculate your heart rate training zones using the Karvonen formula. Essential for beginners and health-focused training.