Free Running Tools
Calculators and tools to help you train smarter and race faster.
Race Replay
Upload a marathon FIT file for pacing, heart rate, elevation, and a coach debrief.
Marathon Race Predictor
Predict your marathon finish time based on a recent race result.
Training Pace Calculator
Calculate your training paces from a recent race result.
Carb Loading Calculator
Calculate your daily carb targets for marathon race week.
Get personalized predictions from your real Garmin data
Connect your Garmin account to unlock AI-powered training analysis, automatic activity sync, and marathon predictions based on your actual training.
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