I’ve just stumbled across this post and it’s serendipitous because I just finished setting up GarminDB in a Docker container. It’s a Python CLI app you can use to download your Garmin stuff locally (which happens to be a bunch of FIT and JSON files).

You don’t have to use Docker ofc, you can also use a venv/pip to set it up somewhere and automate the backup command in any way you want.

It’s a happy coincidence because I was now wondering how to visualize the files. GarminDB also has some –import and –analyze options that parse the data into SQLite but they’re a bit buggy. Then you can use Jupyter notebook templates to produce something you can look at, but Dreeve might also be interesting (especially if it can monitor the folder where GarminDB dumps the files in read-only mode).