Mount Desert Island Marathon
Race Day Weather
Chilly start, wind factor ahead
Runners will face temperatures ranging from 39°F at the start to 47°F by the finish, with a significant wind factor as speeds reach 24 mph. Wind will shift from tailwind in the early miles to headwind around mile 9, requiring pacing adjustments to conserve energy. With an average humidity of 59%, staying hydrated will be crucial; however, no rain is expected. Runners should prepare for the rolling terrain, especially the climbs and descents in the first half.
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Race Info
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. Source
