Interesting on D37 Dual Sport message Board a rider just posted: "I've ridden desert dash, RFK, and Beaumont charity ride, maybe another. The app that I use reads GPX files that are transfered to my phone over USB cable. It's the same cable I use to charge my phone. I bring it to the table with me and plug in to the promoter's laptop. Then it's a simple drag and drop for them." No one here has mentioned that they can down gpx file to phone via USB?