Mount Desert Island Marathon, Half & Relay

Bar Harbor, Maine, United States

Oct, 2027 (TBD)

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!

Fall/Winter 026 is here.

Ciele Athletics COOLmatic | EXP DIAMAfleece™ and Sorino | HC™ fabrics move with you, regulating temperature from your first step to your last.

Available at your local run retailer, and online. Available now.

Seasons change. Commitment doesn’t. The cold moves fast. It won’t wait for you to catch up. everybody run.

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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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