The goose is loose. Run with it.

Meet Harnold — your AI running coach.
He analyzes your Strava, plans your training, and keeps you on pace. Honk honk.

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demo access
email→william.hao.55@gmail.com
pass →1234567890

Please be gentle with the demo. If you create a chat or plan, delete it when done.

Built for Serious Runners

Powered by your Strava data and world-class coaching methodologies.

Smart Analysis

Deep dive into splits, heart rate, cadence, and elevation for every run. Real data, not vanity metrics.

Personal Coach

Conversational AI coach grounded in Daniels, Pfitzinger, and Hansons — with your full Strava history in context.

Strava Synced

Connect once, coach forever. Your runs sync automatically so Harnold always has the latest data.

Harnold with sign

Ready to run smarter?

Connect your Strava, meet your AI coach, and start training with purpose.

Get Started