2027 Acadia Half Marathon and 10K — Bar Harbor, ME

Course features breathtaking view of Acadia National Park and Maine’s rocky coastline. It is a Spectacular 13.1 mile course traveling on the scenic Acadia National Park Loop road. The third largest island on the eastern seaboard, Mount Desert Island boasts an impressive 41,000 acres of land devoted to the Northeast’s only National Park, Acadia - an amazing array of mountains and sea, cliffs and coastline. (Course may be adjusted for closures/construction). *** There is NO RACE DAY packet pickup. *** The Mount Desert Island YMCA is committed to environmentally conscious and sustainable racing, as our course travels through Acadia National Park. A large amount of our waste is paper cups, in fact over 6000 cups per race! For 2027, this is a CUPLESS event. All half marathon runners will receive a race branded, reusable silicon cup at bib pick. You can also bring your own personal reusable cup, handheld water bottle or hydration pack. 10k runners have the option of purchasing a race branded, reusable silicon cup during the registration process, if registering before February 1. There will be 6 water stations on the half marathon course and 2 water stations on the 10k course with water available to fill your reusable container. Thank you for helping us protect and maintain the natural beauty of Acadia National Park!