Looking for an AI cycling coach?
Blocks is an AI training assistant for cyclists and runners. It reads your rides and plans the week with you; you make the calls. Free to use, in the app or inside your own Claude.
Assistant, not coach
A coach is accountable for your season. An AI that reads every ride and cites the research is useful precisely because you stay in charge, so Blocks never moves a session on its own: every change arrives as a card you accept or decline.
If you work with a human coach, keep them. Blocks reads the plan they wrote and explains it; it does not argue with it.
What it does
Built around an assistant that reads your calendar, rides and readiness, plans and adjusts the week, and answers from a sourced sports-science base with evidence levels. It shows every change and asks before writing.
Ask it to build a block towards a race, rearrange the week after a bad night, or read yesterday’s intervals. It answers with your numbers and a named study, not a general rule.
Questions
Can an AI coach a cyclist?
It can do much of the work a coach does between conversations: read every ride, notice that your heart rate drifted or a session was cut short, and draft next week around the days you actually have. What it cannot do is own your season the way a human coach does. Blocks is built as an assistant for that reason: it shows each change and you decide.
What does the Blocks assistant read?
Your calendar, every synced ride with its intervals, your thresholds, and sleep, HRV and resting heart rate where a device provides them. It answers from a built-in base of sports-science research and names the study and its evidence level.
Is it free?
The app, the workout builder, sync and the connector for Claude are free. Free app and MCP connector. In-app assistant on prepaid credits from $10.99, no subscription.
Does it work with Garmin, Wahoo, Zwift and Strava?
Rides come in from Strava, intervals.icu, Karoo, COROS, Polar and others. Planned sessions go to Wahoo and Karoo, to Garmin through intervals.icu, or download for Zwift, TrainerRoad and MyWhoosh.
Can I use it inside ChatGPT or Claude?
Yes — official MCP server, free, no subscription. Claude, Cursor, Codex, VS Code and any MCP client.
Moving from another app? TrainerRoad alternative · TrainingPeaks alternative