2027 Mount Desert Island Marathon

The Mount Desert Island Marathon offers a breathtaking journey through Acadia National Park, a jewel of the Maine coast. This USATF-certified course, first run in 2015 and now in its 11th edition, is renowned for its spectacular natural beauty. Runners traverse paved roads that wind through the park, offering glimpses of rugged coastline, granite cliffs, and the Atlantic Ocean.

While the course is certified with a net drop, it's largely considered a rolling challenge rather than a flat, fast one, with minimal elevation gain and loss. The typical race-day weather in late October provides cool, crisp air, ideal for running, though winds can be a factor. The event draws participants from approximately 48 states, highlighting its appeal as a destination race.

With a median field size of around 887 finishers, the MDI Marathon provides a significant but not overwhelming race-day atmosphere. The growing field size and a repeat-runner loyalty of about 11% suggest a well-regarded event that captures the spirit of its unique location. The finish rewards runners with the satisfaction of conquering a course set against one of New England's most iconic backdrops.