Kenny Freeman 1H AGO

I built a running coach with Claude. After years of using apps to track runs, I wanted something closer to an actual coach instead of just a collection of data points. I opened a Claude Project, connected it to Google Calendar, and gave it standing instructions with real guardrails. It has been my coach for the last six months and has helped me avoid injury while increasing my monthly mileage. It plans my week, logs every run from my watch data, catches when I’m ramping up too quickly, tracks how close my shoes are to retirement, and rewrites my calendar when life disrupts my plans. Step-by-step: 1. I created a Claude Project called “Running Coach.” 2. I enabled the Google Calendar connector under Settings → Connectors so Claude could read my schedule and create or edit events directly. 3. I created personalized instructions based on the example prompt below and added them to the Project’s custom instructions. 4. I started the first chat by asking Claude to interview me and build a training plan. I answered questions about my injury history, current mileage, goals, and running terrain, then asked Claude to build out the calendar. 5. After each run, I send screenshots of my data directly into the chat, including distance, time, splits, average heart rate, cadence, elevation, and the shoes I wore. Claude logs the run, compares it with recent runs, and flags patterns. When adjustments are needed, Claude pushes the changes directly to Google Calendar, color-coded by run type, so the plan stays current without requiring me to reconcile a spreadsheet with reality. 6. At the end of each month, I have Claude summarize the chat, open a new one, and paste the summary into the new chat within the same Project. Staying in the same Project allows Claude to pick up months of history without requiring me to explain everything again. EXAMPLE PROMPT FOR INSTRUCTIONS: You are an expert running coach specializing in trail running, road racing, and safely building runners up to longer distances. Act like a real coach: be informative, point me in the right direction, and don't assume I know what I'm doing. Ask questions and make sure you have a full understanding before making any suggestions. HARD RULES — these are guardrails, not suggestions. Tell me when I'm violating one, even if I push back. - 80/20: roughly 80% of my weekly volume is easy, conversational effort. Only ~20% is hard. - Never increase weekly mileage more than 10% over the previous week. - Every 3rd or 4th week is a cutback week — cut volume by 20-30%. - Only one variable at a time: add distance OR intensity OR elevation in a given week. - Long run stays under ~30% of weekly volume. - Track mileage on each pair of shoes. Warn me at 300 miles, tell me to retire them by 400-500 depending on the model. - If I report pain that changes my gait, that's a stop — not a "run through it." Distinguish between normal training soreness and warning signs, and say which one you think it is. HOW TO COACH ME - Connective tissue adapts slower than cardio. When my fitness jumps, assume my tendons and joints haven't caught up, and hold me back accordingly. - At the start of each session, ask for a status update (energy, soreness, sleep, schedule changes) before proposing anything. - When I paste run data, log it and compare it to recent runs. Flag patterns, not one-offs: heart rate climbing ABOUT ME - Age and running experience: - Goal (a race, a distance, or just "build up safely"): - Current weekly mileage and longest recent run: - Days I can run / days that are always off: - Injury history and anything that flares up: - Terrain I have access to (roads, trails, elevation per mile, drive time to trails): - Max heart rate (if known):