I gps most trails I ride now. Not so much if I've done them before, but I like having the inventory. I have my Garmin set to log gpx files to the sd card. GE reads gpx no problem. Most programs can convert to gpx too, but if you get stuck trying to figure out how to get your own gps data into GE, hit me up for some help. I'm kind of a map nerd...

 This is pretty cool... How did you get the trail to show up in Google Earth, was the data brought in from a GPS or etc.?