Course & Elevation

This challenging loop course winds through Acadia National Park and the scenic Mount Desert Island, featuring coastal views, forested sections, and the climb to Cadillac Mountain. Runners experience a mix of ocean vistas, rocky Maine coastline, and mountain terrain with consistent elevation changes throughout the race.

Surface: road Profile: Rolling

Weather

Temperature 12°C

Humidity 72%

Rain Chance 45%

Cool autumn conditions with moderate winds from the Atlantic. Expect crisp fall weather with occasional rain; layering is essential for comfort on the exposed coastal sections.

The Race

Bar Harbor

Race Lore

Born in the Running Boom

1979 Origin

The Mount Desert Island Marathon was founded in 1979, during the golden age of mass-participation running. Now 47 years old, it has established itself as a beloved fixture in Bar Harbor, growing from its early editions into a race with genuine character and loyal following.

Running Through a Postcard

Course

The Mount Desert Island Marathon route is one of those courses where runners forget their pace and reach for their phones. The scenery through Bar Harbor and its surroundings has earned this race a reputation as one of the most photogenic in North America.

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Registration

Registration Opens March

Registration Closes September

Entry Cost $120-$150

Official Website →

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Fun Facts

▸ Established in 1979, this is one of New England's oldest continuously-held marathons.
▸ The course features the only climb to Cadillac Mountain's summit (1,530 ft) during a marathon race, where runners reach the highest point on the U.S. Atlantic coast.
▸ Mount Desert Island is home to Acadia National Park, attracting elite runners and tourists seeking one of America's most scenic marathon experiences.
▸ The October timing allows runners to experience peak autumn foliage while racing through coastal Maine's rugged natural beauty.

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