3 events in Bar Harbor, Maine

From big races to Saturday morning group runs—find half marathon events and connect with the local endurance sports community.

• 2026 Acadia Half Marathon and 10K [mdiymca.org] [Register at runsignup.com]
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  Sun, Jun 07, 2026 at 5:30 AM

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  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...

  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.

  *** 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! We are making steps over the next few years to move to "cupless" events.

  For 2026, we are encouraging participants to bring their own reusable cup, handheld water bottle or hydration pack. We will still have paper cups at all 6 water stations this year, but with your help we can start reducing our waste and impact on our sensitive environment.

  Thank you for helping us protect and maintain the natural beauty of Acadia National Park!

  10k 13.1 Miles Half Marathon Run

  21 Park Street, Bar Harbor, Maine, 04609, United States
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• 2026 Bar Harbor Bank & Trust Half Marathon and Fall 5K [mdiymca.org] [Register at runsignup.com]
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  Sat, Sep 12, 2026 at 6:15 AM

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  In 1913, John Rockefeller Jr. built a series of carriage roads so he could avoid cars in the Acadia National Park. Nine miles of the Bar Harbor Bank & Trust Half Marathon run on that still-existing...

  In 1913, John Rockefeller Jr. built a series of carriage roads so he could avoid cars in the Acadia National Park. Nine miles of the Bar Harbor Bank & Trust Half Marathon run on that still-existing system of hard-packed trails. The hilly course starts in the small, picturesque fishing town of Bar Harbor, then cuts into the National Park. Dense forest engulfs runners as they cross several old granite bridges before looping back to town.

  Packet Pickup on Friday, September 11, 2026, times TBD.

  NO RACE DAY PACKET PICKUP

  We do NOT mail out packets.

  Medals are awarded to all Finishers.

  Tshirts for all half marathon participants and the first 50 5k participants to register.

  5k 13.1 Miles Half Marathon Run Trail

  21 Park Street, Bar Harbor, Maine, 04609, United States
  OpenStreetMap Google Maps
• The MDI [finishers.com]
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  Sun, Oct 18, 2026

  Description

  Ready for an unforgettable adventure in the heart of nature? 🏃‍♂️ "The MDI" race in Bar Harbor promises a breathtaking course where sea and mountains meet, offering stunning vistas. Whether you're into the half-marathon, the solo marathon, or a relay, there's something for everyone! 🌟

  Half Marathon Marathon Run

  Bar Harbor, Maine, United States
  OpenStreetMap Google Maps

Local Clubs & Organizations