Mount Desert Island Marathon
Mount Desert Island Marathon is a hilly Maine point-to-point from Bar Harbor to Southwest Harbor, with Acadia scenery and Boston qualification.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 20, 2026.
Quick facts
- USATF-certified Boston qualifier on course ME23002JG.
- Point-to-point route runs from Bar Harbor to Southwest Harbor.
- Hilly profile rewards strength and restraint more than even-split ambition.
- Six-hour-30-minute course limit and limited field favor early planning.
About the Mount Desert Island Marathon
Mount Desert Island Marathon is a scenic Maine fall race that treats the island's hills as part of the attraction. The marathon shares race weekend with a half and relay while keeping its own point-to-point course and limited-entry identity.
Course
The marathon starts in Bar Harbor and runs through Mount Desert Island communities to Southwest Harbor. Rolling roads, early hills, and a sustained late climb make it a strength course despite long runnable stretches and coastal views.
Race-day weather
Mid-October often brings a cold start, crisp air, and temperatures that stay workable for racing. Rain, coastal wind, and quick changes remain realistic in Acadia's fall weather.
Past Mount Desert Island Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, October 18, 2026 | Upcoming | — |
| 2025 | Sunday, October 19, 2025 | Completed | Open results |
Mount Desert Island Marathon FAQ
When is the Mount Desert Island Marathon?
The 2026 Mount Desert Island Marathon is on Sunday, October 18, 2026.
How do I register for the Mount Desert Island Marathon?
You can register for the Mount Desert Island Marathon at reg.runmdi.org.
Can I use the Mount Desert Island Marathon for Boston qualifying?
Marathon Scout marks the Mount Desert Island Marathon as a Boston qualifier. Check the current Boston qualifying times and confirm current certification with the race before registering.
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