The perimeter road at Acadia is paved and a good ride. Be careful you don't miss the turn for the water, it's near the beginning and hideously easy to miss. The Jordan Pond Tea House is a must (it's on the perimeter road), they are famous for chowder and popovers. The perimeter road also goes up Cadillac Mtn, which is a good hike, an easy drive and a gut wrenching climb on a bike. Btw, you can rent a Mtn bike for the carriage trails.
There is a bunch of good riding. I liked rte 230. The peninsula that goes down to Deer Isle is mostly good riding. Follow the coast. I'd stay off Rte 3 and Rte 1A to Bangor. You prob won't get down there but avoid Rte 52. But most of the other roads aren't too bad; Rte 1 isn't all that bad except for about 4 miles north of Camden. There is an easy detour, and it doesn't sound like you're touring.
If you are doing lite touring, I have done that in that area and would have some suggestions.
Last edited by late; 06-25-08 at 10:02 PM.