Download all Garmin Connect Rides / Activities web application v2
This will pull all tcx files from your garmin connect account and zip them up for download.
Secure link: https://www7224.ssldomain.com/sideburn/garmin/
If you're really hesitant about using your password on this site, I suggest changing your
garmin password temporarily for use on this application then changing it back once you have
downloaded your rides.