Howdy y'all! I've been using Claude as a coach for a little over a year now and really enjoying it (have used it for a couple of 50K's and a 50 miler). I also work as an ML Engineer professionally and use Claude Code, Codex, etc. in that capacity quite a bit. (1) On coaching -- I have been creating a project for each training block. If training for a specific race, I'll upload a description of the course, any race reports I can find, and any info the RD posts. I do also upload notes from a training book (e.g. Koop's book). Then chat with Opus to create a plan. Each week, I start a new thread for the week ahead and upload FIT files so it can analyze how well I'm hitting the workouts. At the end of the week, I generate a summary of the week and save that back to project knowledge. If I ever need to make major adjustments, I spin up a new Opus thread. I did try using Fable for this today but actually didn't notice significant quality increase; perhaps Opus is smart enough :) (2) Another relevant tool I've built: I have a script to download and transcribe every episode of a few training podcasts. I also have a small RAG application on top of these that I can use to search for relevant episodes if I have a specific training question. This was more of a curiosity; you could get the RAG part for free by letting Claude Code loose in a directory of transcripts. But I did find this super helpful when I was figuring out iron deficiency! Lots of good info in a few podcasts that made it helpful to get a good protocol set up for myself. Curious to learn more what folks have been doing that's made a difference for their training. See y'all around!