I'm going on a group ride in a few weeks and the guy hosting the ride has created GPX and TCX files for us to copy to our devices so we have the route. I currently only have a 310xt but I'll be purchasing an Edge 810 before I go on this ride. I've already imported the provided TCX files into Garmin Training Center in preparation for my 810 but ideally I'd prefer to save them as courses in Garmin Connect but I can't figure out how. So 2 questions:
* Is it possible to create a course in GC from either a GPX or TCX file? If no, than am I correct that the only way to create GC courses is either manually or by saving an existing activity as a course?
* What's the difference between a GPX and TCX file? Since I have both, which should I use for my upcoming ride (with the intent being to have a turn by turn route on my 810 in case I get separated from the rest of the group)?
Also, sort of an unrelated question but will I be able to create workouts in TC and copy them to my 810 in the same way that I've been creating and copying workouts to my 310xt? Does the 810 support wireless syncing via ANT+ like the 310 or will I have to connect the USB cable? (I realize this is probably a better question for the 810 forum but figured someone reading this might know).
Thanks!
Jason