GitHub - adammendoza/Garmin-TCX-Builder-Mac-Swift: This is a utility program to create your .tcx file from a Garmin GPS when the unit fails to build one for you.
FAQ: Manually Uploading FIT and TCX Files to your Calendar, and how to Export these from Garmin Connect and Strava | Final Surge Blog
tcxreader · PyPI
TCX file format issue for manual import from ifit.com (Nordictrack Elliptical) - Garmin Connect Web - Mobile Apps & Web - Garmin Forums
Add export files (.tcx/.csv) from Garmin Connect – iQO2
Covert csv file to TCX - Garmin Connect Web - Mobile Apps & Web - Garmin Forums
Covert csv file to TCX - Garmin Connect Web - Mobile Apps & Web - Garmin Forums