🤖 AI Running Coach · Free

The AI Running Coach
That Actually Adapts

WattRun analyzes your training automatically, generates personalized plans and gives you data-driven feedback after every run. Free. No subscription.

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5K 10K Half Marathon Marathon Ultra 4–24 weeks AI-generated Pace-based
Why WattRun

What an AI running coach
actually does

Most plans are static templates. WattRun calculates your plan from your real data and adjusts it after every session.

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AI-generated plans

Powered by Claude AI. Tell it your goal, your fitness and your schedule — get a personalized plan in seconds.

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Fitness · Fatigue · Form

Chronic and acute training load are calculated automatically after every run. See your real fitness progression.

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17 coaching triggers

Automatic insights: overreaching warnings, PR detection, pacing analysis, recovery nudges — without manual review.

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Strava auto-sync

Connect once. Every run flows in automatically. No more manual FIT uploads from Garmin, Wahoo or COROS.

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Goal tracking

Set a target race and date. WattRun builds your taper, predicts your finish time and warns you when you drift off-track.

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Pace zones done right

Five training zones calculated from your actual data. Easy base, threshold, VO₂max — all in one place.

How it works

Your plan in 3 steps

No long onboarding. In under 2 minutes you have your personalized plan.

  1. 1

    Sign up + connect Strava

    Create a free account and connect Strava — or upload FIT files from Garmin, Wahoo or COROS. WattRun auto-detects your fitness from past runs.

  2. 2

    Pick your goal + race date

    5K, 10K, Half Marathon, Marathon or general fitness? Choose your target, the race date and the training days you have available.

  3. 3

    AI generates your plan in seconds

    WattRun builds your training plan with daily sessions, pace targets and a fitness curve. The plan adapts every time you complete or miss a run.

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The problem

Why static training plans fail

You downloaded a 16-week marathon plan. Week 3: work gets busy, you miss two runs. Week 5: you catch a cold. Week 8: the long run feels too hard. The plan doesn't care. It ploughs ahead, oblivious to your actual state.

Static PDF plans

One-size-fits-all. Built for an "average" runner who doesn't exist. No feedback when you miss sessions or struggle with paces.

Generic apps

Lock metrics behind paywalls. Show fitness numbers but no coaching. You're left to interpret the data yourself.

WattRun

Adapts to your actual fitness, fatigue and form. AI feedback after every run. Free, no subscription, no paywalls.

All distances

From 5K to ultra — one coach

WattRun creates training plans for every distance, every level and every available training window.

Beginner

For runners with less than 2 years of experience. Builds your fitness systematically over 12–16 weeks with mostly easy-zone running and short intervals.

Half Marathon

12-week build with progressive long runs, threshold work and a 2-week taper. Predicts finish time as your fitness rises.

Marathon

16–24 weeks of structured training with marathon-pace runs, long efforts and recovery weeks. Plan adjusts after every session.

5 hours / week

Time-crunched plan for working runners. Maximum return on minimum hours — quality over volume.

Sub-3 / Sub-4 marathon

Goal-based plans calibrated to your target finish time and current fitness. WattRun flags you early if the goal needs adjusting.

Free

WattRun creates your plan for free — no subscription, no credit card. Personalized from your real training data.

FAQ

Frequently asked questions

What is an AI running coach?
An AI running coach analyzes your training data automatically and provides personalized feedback, training plans and insights after every run. Unlike static PDF plans, AI coaches adapt to your actual fitness, schedule and performance.
How does WattRun use AI for running training?
WattRun uses Claude AI to analyze your runs and generate personalized coaching insights. After every activity, 17 automated triggers check for pacing issues, personal records, overreaching signals and more. The AI then generates or adjusts your training plan based on what it sees.
Can AI create a marathon training plan?
Yes. WattRun's AI generates personalized marathon and half marathon training plans based on your current fitness, goal time and available training days. The plan adapts dynamically when you miss sessions or your fitness changes — something static PDF plans cannot do.
Does WattRun work for both cycling and running?
Yes. WattRun started as a cycling training tool and now supports running too. The fitness, fatigue and form math works identically for both sports. You can track rides, runs, or both in the same account.
Is WattRun free?
Yes, WattRun is free to use. Connect your Strava account or upload FIT files from Garmin, Wahoo or COROS and get AI coaching insights immediately — no credit card required.

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personal AI coach

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