TheMarathon Clinic
A pack of runners along the riverside

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?Most used

Race-time predictor

One recent race gives your equivalent times at every distance, and an honest read on whether your goal is on for the weeks you've got.

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How should I train?

Pace & zone calculator

Your easy, long, marathon, threshold and interval paces, each with the heart rate to match, so your watch and your legs are training the same effort.

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What 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.

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How 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.

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How do I fuel?

Fuelling & hydration

Your race-day carbs, fluid and sodium, turned into a race-clock schedule of exactly when to take what: honest ranges for the day's conditions, caffeine timing and carb-loading included. Rehearsed, not a gamble.

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How much will the heat slow me?

Heat & humidity pace adjuster

Enter the forecast temperature and humidity and see how much they'll cost you: an adjusted goal pace, plus a sense of the heat risk.

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How 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.

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No 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.