2026 Mount Desert Island Marathon - Oct 18

Point-to-point marathon course in Bar Harbor with 518m elevation gain. A genuinely hilly point-to-point — not a flat PR course, and the race is honest about that. The route runs 26.2 miles from downtown Bar Harbor to Southwest Harbor along the rugged coast of Mount Desert Island, the home of Acadia National Park, circling Somes Sound (often called the only fjord on the U.S. East Coast). After a slightly downhill opening mile there is a roughly 150-foot climb over the ridge between Champlain and