Build an endurance coach from a year of training data

Fed a year of TrainingPeaks data and race goals, Claude Code found 30% of long runs in the grey zone.

by Bryan Collins29 Sep 2026

Prompt for your agent

Goal: Coach my endurance training from my own data, without hype.
Setup: agents used in source: Claude; tools/MCPs stated: TrainingPeaks.
Steps:
1. Feed it a year of TrainingPeaks data, plus race goals and training times.
2. Analyse intensity distribution (e.g. long runs in the grey zone).
3. Recommend changes plainly, with no pep talk.
Rules: ask me before anything irreversible (sending, posting, paying, deleting); don’t invent data, results or tools I haven’t given you; tell me what you couldn’t verify.
Based on: Bryan Collins — https://x.com/bryancollins/status/2104829282073616572 (summarised from source; the source has no explicit step list)

Steps are our summary of the source (it has no explicit step list). Includes a “Based on” credit line.

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Agents, models and tools only what the source states

Agents
Claude
Tools
  • TrainingPeaks

Sources & credit