I don't have a smart phone or an android. I'll carry a GPS with me just in case. My primary concern is that I don't know the trails I'm looking for. With driving it's easy; just memorize the exit and a couple of turns and you're there. With the bike route, there's a whole list of trails and roads being linked together, and I think it would be really easy to miss a turn and lose yourself. But if it's not a concern to you guys, then I think I can handle it.