In 80 days · Sun, Oct 18, 2026
Don't let race day sneak up
One email during race week. That's it.
Sunday, October 18th, 2026
Main St & Cottage St, Bar Harbor ME
Marathon · Half
47–58°F · some rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
41–59°F
dry
2024
39–58°F
dry
2023
46–58°F
dry
2022
56–62°F
rain
2021
49–59°F
dry
2020
43–55°F
dry
2019
45–53°F
dry
2018
37–43°F
dry
2017
50–65°F
dry
2016
50–60°F
dry
Best months to race in Maine →
About this race
Event Overview
The Mount Desert Island Marathon rolls from Bar Harbor through Acadia's October foliage to Southwest Harbor — consistently ranked among the most scenic marathons in America.
Event Details
- Date: 2026-10-18
- Location: Main St & Cottage St, Bar Harbor, ME
- Website: www.runmdi.org
- Scenery: Enjoy breathtaking views of Acadia's vibrant fall foliage.
Course map
Train with a club
Run clubs near Bar Harbor to train with before race day.
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.