For the 1st time since 2019 the MDI Marathon will be run, this Sunday, October 16th.

Photo Chris Popper
Photo Chris Popper

The 19th Annual MDI Marathon will take place Sunday, October 16th and begins in downtown Bar Harbor and will end in Southwest Harbor. Drivers in the area should exercise caution and be prepared for delays as runners and spectators will be on the course. Early runners will be on the course at 8 AM!


Photo MDI Marathon
Photo MDI Marathon


  • Start at Main Street Bar Harbor.
  • Follow Route 3 south.
  • Turn LEFT Cooksey Drive. (at approx. 6.3 miles)
  • Take next two LEFT turns. (at approx. miles 7.7 and 7.9)
  • Turn LEFT a stone fountain in Seal Harbor returning to Route 3.
  • Turn LEFT on Route 198 (mile 11.4) just past Asticou Inn.
  • Follow Main St. straight through downtown Northeast Harbor.
  • Main St. becomes Rock End Road. (Keep Neighborhood House on left.)
  • Turn LEFT on Maple Lane.
  • Turn RIGHT on South Shore Road.
  • Bear left or go straight at all intersections. (Follow painted course markings.)
  • South Shore Road becomes Manchester Road. (Half Marathon Start Line)
  • Bear LEFT on Sargeant Drive.
  • Turn LEFT on Route 198 (at approx. mile 17.3)
  • Turn LEFT on Butler Rd (at approx. mile 18.2)
  • Turn LEFT and rejoin Route 198 (at approx. mile 18.6)
  • Turn LEFT at traffic light on Route 102 (Somesville).
  • Finish on Main Street in downtown Southwest Harbor.

To see the MDI Marathon 2019 Handbook with all the information you need if you're competing or just planning to watch the race click HERE

Volunteers are still needed. You can contact race organizer Gary Allen by going to the website and clicking HERE.

And if you want to run in the 2023 Marathon, save the date! The 2023 MDI Marathon will be held on Sunday, October 15th

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