Explorer's Guide Maine Coast & Islands: Key to a Great Destination. The best of the best all along Maine's magnificent coastline! This third edition brings you new and current information for traveling smart along the Maine coast. The Maine coast covers more than 4500 miles more than all of the rest of the East Coast combined. Highly selective and clearly presented, this completely updated third edition orients you to Maine's regions, offers itineraries, and describes at length the many things to see and do, as well as places to eat and stay.