Not having much luck with the 'search' function. Sorry. I'm sure this question is asked regularly.
I have successfully imported my Basecamp route to my Garmin Zumo 390. However, I have also bought a DeLorme In-Reach tracker and it has the facility to import routes in GPX, KML, or KMZ format. I'm running Windows 8 on a Surface Pro and have had a poke about in the folder list under AppData, but cannot locate my route. Where do I find these files for export?