I'm green with this, but added your file under the "GPX" folder on the device (eTrex20). When I did that, a new option appeared (Routes) under "Where To?" in the device menu. When I click on that, there are three selections, all named "Routes". When I click on any of them, the device looks like it tries to load, but just hangs. I rebooted after a few minutes. To be fair, I've tried the elsewhere.org gpsvisualizer directions and can't create a gpx file that the device will recognize. Elsewhere.org just says "loading..." endlessly in firefox and gpsvisualiser's gpx conversion of the kml files aren't recognized, so I can't confirm functionality with a known good gpx file.