The story behind TRI-HARDER

TRI-HARDER started as a personal experiment: what happens when you give an AI access to your actual training data? Not generic “run more, swim better” advice, but a coach that knows your workouts, your goals, your fitness history, and your constraints.

Most triathlon coaching platforms are either expensive human coaching or rigid plan generators that don't really understand your training. TRI-HARDER sits in between — a conversational AI coach that analyses your real data from Strava or intervals.icu and gives you specific, contextual guidance.

The app is free to use and privacy-first. Your training data stays in your browser. The AI model key lives server-side. There are no ads, no third-party analytics, and no selling of your data.

Built by Martin Chan — triathlete, data scientist, and the kind of person who thinks CTL/ATL charts are genuinely exciting.