how to upload tcx to strava?
['Login to Garmin Connect and select the "Activities" link to give you a list of all your uploads.', 'Select the activity. On the activity page, click on the link that says "Export" and choose the "TCX" option. ... ', 'Upload the . tcx file to the Strava website. ... ', 'To upload files in bulk, select up to 25 files at a time.']