Building a Personal AI Running Coach

A product manager who's passionate about endurance sports used Claude Code to build their own AI running coach.

What They Built

• An AI-powered running coach application
• Tracks workout data and running performance
• Analyzes training patterns and progress
• Generates personalized training plans
• Built as a personal project, not a commercial product

Development Process

• Used Claude Code for the entire development workflow
• Started from a personal need — wanted a coach that understood their specific training style
• Documented the journey on Medium

Key Takeaway

This demonstrates how Claude Code enables non-professional developers (in this case a PM) to build functional applications for personal use cases. The bar for creating custom fitness tools has dropped dramatically.

Caveats

• Personal project — not validated by sports scientists
• Not a replacement for professional coaching
• Training recommendations should be verified by qualified coaches