Quote Originally Posted by 3Chief View Post
We use Roadtrippers.com however many GPS's claim to allow you to build a trip and load it in your unit although I've never gotten one to work. Roadtrippers can be a bit clunky to use but does help you build a route to your liking.
I routinely load very detailed trip routes into my Garmin Zumo. Most all of the routing programs allow you to convert the route to a gpx file and that can be downloaded into most Gps's. I have downloaded trips of as long as two weeks into my Zumo with no problem.

Az Wingrider