I find the route feature on the Garmin Edge 500 nearly unusable. Were I planning to rely upon GPS routing, I'd want to upgrade to a higher-end model. I prepare my route in MapMyRide and print out the turn-by-turn instructions and put them in the map case on the handlebar bag. I like plenty of way points to know that I'm on the correct route as I get quite anxious if I don't know exactly where I am. When I detour on purpose or by accident, I rely on my smartphone to get me back on track.