Acadia Half Marathon
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Acadia Half Marathon and 10K
The Acadia Half Marathon and 10K is organized by the Mount Desert Island YMCA in Bar Harbor, Maine. The event takes place on June 7, 2026 and serves as a fundraiser; entry fees support the YMCA's scholarship programs that provide access to care, services, and programs.
The courses travel through Acadia National Park and along Maine's rocky coastline, using the park loop road for the half marathon. The race is one of only a few events held within Acadia National Park. Walkers are able to participate in the half marathon at a slower pace and are encouraged to do so.
The organizer notes an environmental focus because the course passes through a sensitive natural area. Participants are encouraged to bring reusable cups, handheld water bottles, or hydration packs. Paper cups will still be available at six water stations for 2026 while the event moves toward cupless operations.
Logistics notes provided by the organizer include that half marathon registration is full and a waitlist exists for any openings, while spots remain available in the 10K. The organizer also states that there will be no race day packet pickup. Visit the organization's website for the most recent information.
- Half Marathon - 13.1 miles
- 10K - 10 kilometers