Running Tools
Free calculators built on the same pacing engine behind Stride Coach training plans. No sign-up, instant results.
Training Pace Calculator
Turn a recent race into your easy, marathon, threshold, interval, and repetition paces (VDOT-based).
Open tool →Race Time Predictor
Predict your 5K, 10K, half, and marathon times from one recent result using Riegel’s formula.
Open tool →Pace Converter
Convert between min/mile, min/km, mph, and kph — and see finish times at any pace.
Open tool →Fueling Calculator
Build a race fueling plan: carbs per hour, gels to carry, fluid and sodium targets, and timing.
Open tool →Want a full plan, not just numbers?
Generate a free, personalized training plan for any distance in seconds.
Create your free plan