Discover the ultimate Boston to Bar Harbor road trip! This itinerary highlights the best coastal towns, lighthouses, and seafood spots in the region. Stop in Portsmouth for quaint charm, Portland for foodie delights, and Camden for outdoor adventures and scenic harbor views. End your trip in Bar Harbor, the gateway to Acadia National Park. This guide shares all the best stops worth making, hidden gems, best places to stay overnight, and the most charming towns to see on your drive.