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Free tools to help you run better.
A full suite of quick tools to help you train smarter. Free, no account needed. Use one or use them all; your numbers carry across between them.
What can I run?Start here
Race-equivalent range
One recent race gives a modelled range at every distance and shows the gap to your goal without pretending one result can forecast race day.
Open the toolHow should I train?
Pace & zone calculator
Clinic training ranges built with Daniels–Gilbert equations, plus optional rough heart-rate estimates to compare with feel.
Open the toolWhat should I run today?
Workout builder
A session built for where you are: warm-up, reps, recoveries and paces, with the why spelled out. Three quick questions choose it for you, and it remembers whether you like straight sets, pyramids or cutdowns.
Open the toolHow do I pace it?
Marathon pacing & splits
Your goal time turned into the clock at every marker, even or a controlled negative split, so race day is a plan, not a guess.
Open the toolHow do I fuel?
Fuelling & hydration
A conservative carb starting point, rough fluid and sodium planning ranges, and a Clinic race-clock template to rehearse. Caffeine is opt-in only.
Open the toolHow much will the heat slow me?
Heat & humidity pace adjuster
Enter a forecast to explore a Clinic modelled planning range for finish time and pace, plus a non-medical heat-planning band.
Open the toolHow do I stay strong when it hurts?
Race-day Mind Plan
Build your own mental game plan for race day: cue words for each phase, an if-then plan for the moment it gets hard, and a short rehearsal to run through in the final week. Free, no account.
Open the toolNo catch
These are free because they’re genuinely useful. When you want the full picture, a plan and a coach are here. The tools stand on their own.
Free tools. Real coaching when you want it.
Use a tool today. Build a full plan whenever you're ready.