Claude + MCP Builds Running Routes, Syncs to Garmin Watch

A Redditor (u/tommy-getfastai) shared how they hooked Claude up to a custom route builder using MCP (Model Context Protocol). The setup lets Claude create running routes and sync them directly to a Garmin watch.

How It Works

• A friend had already built a route builder. The Redditor connected it to Claude via MCP.
• Claude generates routes that are viewable in realtime — you can watch it work and make manual adjustments.
• The MCP also connects to Garmin's API, so routes can be sent directly to the watch.

Real-World Result

In San Francisco — famously hilly — Claude found flatter running streets in the Mission district that the user hadn't discovered in about a year of running there. The AI identified routes the human missed.

Key Takeaway

This isn't a public product. It's a personal integration using MCP between Claude and a custom route-builder app, plus Garmin's API. But it shows MCP's potential for hooking LLMs into domain-specific tools with real-world output (GPS routes, not just text).