My wife and I are doing our first metric century in September. It looks like the turn sheet is all electronic and that's where I need help.

I have an Android (Samsung) phone and no data plan. So I am looking for the best application that I can load a map to and it will give me the turn by turn directions for the route.

I have a sneaking suspicion that Google maps will now do what I am looking for, but I am appealing to the collective wisdom of the forum to help me out.

Fellow cyclers, your best advice?