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I too am trying to transfer some activities from Training Centre (Mac) into Garmin Connect. When I export from Training Centre, each .tcx file is 38.7 MB in size. Is such a large file size to be expected?
No, something wrong there. A 15 mile run I did today was 750 K. Are you exporting the activities individually? Right click on the activity and select export. I'm using the Windows version of TC.
I've upgraded to Training Centre 2.1.8, but still have the same problem. Yesterday's 10 km run, exports as a 40 MB .tcx file!
Training Center for the Mac cannot export individual activities. So, the resulting export file contains all your activities.
Now to see if I can manually extract a few selected activities... :rolleyes: