Mount Desert Island Marathon, Half & Relay
Bar Harbor, Maine, United States
Oct 18, 2026 - Sunday
Half-marathon, Marathon, Relay
Race Information
The Mount Desert Island Marathon, Half & Relay is North America’s premier destination road race. The award-winning course features miles of pristine terrain passing tranquil lakes, soaring mountains, sleepy Maine villages, and stunning seaside vistas —including Somes Sound, the only fjord on the Eastern Seaboard— all set against the awe-inspiring backdrop of Acadia National Park in peak fall foliage season. The Marathon and Team Relay start in the world-famous Bar Harbor, while the Half-Marathon starts in picturesque village of Northeast Harbor. All three races finish on the quietside of MDI in the hardworking lobster fishing community of Southwest Harbor.
Held annually the weekend following Indigenous Peoples’ Day, this fall classic has earned national and international accolades. Once you #RunMDI, you’ll see why!
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Run Pick of the Month – Maine Coast Marathon, Half and 5K
Run where the land meets the sea and experience the rugged beauty of New England in May 2026.
Use code MC15 to to score 15% off your registration!
The course is a runner’s paradise, winding past pristine white-sandy beaches and tranquil marshlands that offer breathtaking coastal views at every mile.
But the experience doesn't end at the finish line. Join the official after-party at Wells Harbor Community Park.
Celebrate your victory with delicious snacks, live music, and, for runners 21 and over, two complimentary beers! It’s the perfect way to toast your accomplishment by the water.
Sign up for the ultimate Maine Coast experience!
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Race Facts
Race Size: 500 - 1,000
Course Type: Road
Boston Qualifier: No
Kids Run: Yes
Where to Stay
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