Mount Desert Island Marathon
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Mount Desert Island Marathon, Half & Relay
The Mount Desert Island Marathon, Half & Relay is an annual road race on Mount Desert Island, Maine. Held the weekend following Indigenous Peoples' Day, the event is scheduled for October 18, 2026. It is hosted by Crow Athletics and features a USATF certified course.
The course travels through varied terrain including lakes, mountains, small Maine villages, and seaside vistas. It passes Somes Sound, described as the only fjord on the Eastern Seaboard, and runs against the backdrop of Acadia National Park during peak fall foliage. The Marathon and Team Relay begin in Bar Harbor. The Half Marathon begins in Northeast Harbor. All races finish in Southwest Harbor.
The weekend includes multiple race options and additional activities such as a health and fitness expo, a pre race pasta dinner, and a kids run. The event has received recognition from national publications and organizations, including Runner's World, Competitor Magazine, ESPN, and Outside Magazine.
Race types: Visit the organization's website for the most recent information.
- Marathon
- Half Marathon
- Team Relay
- Public Safety Relay
- Kids Run
