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Mount Desert Island Marathon

Bar Harbor, ME, USA

Partly cloudy throughout the day.

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Details
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Pre-Race
Race
Post-Race
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Race Overview

The Mount Desert Island Marathon, Half & Relay is North America’s premier destination road race. The award-winning course features miles of pristine terrain passing tranquil lakes, soaring mountains, sleepy Maine villages, and stunning seaside vistas —including Somes Sound, the only fjord on the Eastern Seaboard— all set against the awe-inspiring backdrop of Acadia National Park in peak fall foliage season. The Marathon and Team Relay start in the world-famous Bar Harbor, while the Half-Marathon starts in picturesque village of Northeast Harbor. All three races finish on the quietside of MDI in the hardworking lobster fishing community of Southwest Harbor.
Wikipedia

FAQ

When is the 2026 Mount Desert Island Marathon?

The 2026 Mount Desert Island Marathon will be held on Sunday October 18, 2026.

Is the Mount Desert Island Marathon a Boston Marathon Qualfier?

Yes, the Mount Desert Island Marathon is an official Boston Marathon qualifier.

What is the time limit for the Mount Desert Island Marathon?

The time limit for the Mount Desert Island Marathon is 6.5 hours.

Mount Desert Island Marathon Weather History

Mount Desert Island Marathon Weather Averages

Average Temp: 48°, Average Low: 42°, Average High: 55°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
45°
47°
49°
50°
51°
52°
54°
Feel43°44°46°48°49°50°52°
Rain-------
Wind7mph
8mph
9mph
10mph
10mph
11mph
11mph
Dew39°40°41°39°39°38°38°
RunScoreRun Score: 7Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mount Desert Island Marathon 2025

Oct 19, 2025
Clear conditions throughout the day.
Low: 38°, High: 60°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 41°
clear-day 47°
clear-day 51°
clear-day 54°
clear-day 56°
clear-day 58°
clear-day 60°
Feel39°47°51°54°56°58°60°
Rain-------
Wind3mph
0mph
6mph
7mph
6mph
5mph
6mph
Dew40°45°48°49°49°49°49°
RunScoreRun Score: 8Run Score: 7Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9

Mount Desert Island Marathon 2024

Oct 20, 2024
Partly cloudy throughout the day.
Low: 35°, High: 70°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 37°
clear-day 46°
clear-day 52°
partly-cloudy-day 60°
partly-cloudy-day 65°
clear-day 67°
partly-cloudy-day 70°
Feel35°46°52°60°65°67°70°
Rain-------
Wind3mph
2mph
0mph
4mph
5mph
8mph
2mph
Dew37°46°49°40°43°44°38°
RunScoreRun Score: 7Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 8

Mount Desert Island Marathon 2023

Oct 15, 2023
Becoming cloudy in the afternoon with late afternoon rain.
Low: 47°, High: 56°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 49°
clear-day 49°
clear-day 52°
clear-day 54°
partly-cloudy-day 55°
partly-cloudy-day 56°
cloudy 56°
Feel45°46°52°54°55°56°56°
Rain-------
Wind10mph
8mph
7mph
6mph
6mph
10mph
10mph
Dew39°43°43°43°43°41°42°
RunScoreRun Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8

Mount Desert Island Marathon 2022

Oct 16, 2022
Clearing in the afternoon.
Low: 46°, High: 62°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
fog 47°
cloudy 49°
partly-cloudy-day 52°
clear-day 57°
clear-day 53°
clear-day 59°
partly-cloudy-day 62°
Feel47°47°52°57°53°59°62°
Rain-------
Wind0mph
6mph
6mph
6mph
3mph
7mph
3mph
Dew47°49°52°50°52°52°52°
RunScoreRun Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9

Mount Desert Island Marathon 2019

Oct 20, 2019
Clear conditions throughout the day.
Low: 42°, High: 54°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 43°
clear-day 44°
clear-day 46°
clear-day 48°
clear-day 50°
clear-day 50°
clear-day 53°
Feel43°41°44°45°49°46°53°
Rain-------
Wind2mph
5mph
5mph
6mph
4mph
9mph
6mph
Dew34°36°38°38°38°37°39°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 9

Mount Desert Island Marathon 2018

Oct 14, 2018
Partly cloudy throughout the day.
Low: 40°, High: 53°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 42°
clear-day 44°
clear-day 45°
partly-cloudy-day 46°
clear-day 47°
partly-cloudy-day 48°
clear-day 50°
Feel37°38°38°40°42°43°50°
Rain-------
Wind8mph
11mph
14mph
13mph
10mph
11mph
13mph
Dew35°36°36°33°32°32°32°
RunScoreRun Score: 8Run Score: 7Run Score: 6Run Score: 7Run Score: 8Run Score: 8Run Score: 8

Mount Desert Island Marathon 2017

Oct 15, 2017
Partly cloudy throughout the day.
Low: 54°, High: 65°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 55°
partly-cloudy-day 62°
partly-cloudy-day 62°
cloudy 58°
cloudy 59°
cloudy 57°
cloudy 61°
Feel55°62°62°58°59°57°61°
Rain-------
Wind7mph
5mph
6mph
9mph
9mph
7mph
6mph
Dew52°55°56°58°58°60°60°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9

Mount Desert Island Marathon 2016

Oct 16, 2016
Partly cloudy throughout the day.
Low: 34°, High: 59°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 51°
cloudy 53°
cloudy 56°
cloudy 56°
cloudy 57°
cloudy 57°
partly-cloudy-day 59°
Feel51°53°56°56°57°57°59°
Rain-------
Wind9mph
11mph
14mph
18mph
14mph
17mph
16mph
Dew48°50°49°50°51°51°52°
RunScoreRun Score: 9Run Score: 8Run Score: 7Run Score: 6Run Score: 7Run Score: 6Run Score: 7

Mount Desert Island Marathon 2015

Oct 18, 2015
Becoming cloudy in the afternoon.
Low: 33°, High: 40°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 33°
clear-day 34°
clear-day 35°
clear-day 37°
clear-day 38°
partly-cloudy-day 39°
partly-cloudy-day 40°
Feel22°25°27°28°29°29°31°
Rain-------
Wind17mph
14mph
13mph
14mph
15mph
20mph
21mph
Dew30°28°26°25°20°20°18°
RunScoreRun Score: 4Run Score: 5Run Score: 5Run Score: 5Run Score: 6Run Score: 5Run Score: 5

Mount Desert Island Marathon 2014

Oct 19, 2014
Partly cloudy throughout the day with early morning rain.
Low: 43°, High: 57°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 47°
cloudy 46°
cloudy 45°
cloudy 45°
cloudy 46°
cloudy 47°
cloudy 47°
Feel47°38°38°39°40°41°42°
Rain-------
Wind0mph
20mph
18mph
15mph
14mph
14mph
13mph
Dew42°39°37°37°37°37°37°
RunScoreRun Score: 7Run Score: 5Run Score: 5Run Score: 6Run Score: 6Run Score: 7Run Score: 7

Mount Desert Island Marathon 2013

Oct 20, 2013
Partly cloudy throughout the day with morning rain.
Low: 52°, High: 61°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 54°
cloudy 57°
cloudy 58°
partly-cloudy-day 58°
cloudy 60°
clear-day 60°
clear-day 60°
Feel54°57°58°58°60°60°60°
Rain-------
Wind1mph
8mph
9mph
8mph
13mph
13mph
16mph
Dew53°55°54°49°45°43°36°
RunScoreRun Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 7

Mount Desert Island Marathon 2012

Oct 14, 2012
Cloudy skies throughout the day with rain clearing later.
Low: 43°, High: 53°, Moderate Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
rain 44°
rain 45°
rain 47°
rain 49°
cloudy 52°
cloudy 53°
cloudy 53°
Feel44°43°46°47°52°53°53°
Rainlightlightlightlight---
Wind0mph
5mph
3mph
6mph
6mph
3mph
3mph
Dew38°40°42°43°45°45°46°
RunScoreRun Score: 5Run Score: 6Run Score: 6Run Score: 9Run Score: 9Run Score: 9Run Score: 9

Mount Desert Island Marathon 2011

Oct 16, 2011
Partly cloudy throughout the day.
Low: 55°, High: 59°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 55°
clear-day 55°
cloudy 56°
cloudy 56°
cloudy 56°
partly-cloudy-day 56°
cloudy 58°
Feel55°55°56°56°56°56°58°
Rain-------
Wind13mph
8mph
15mph
11mph
10mph
15mph
11mph
Dew39°39°39°39°39°38°38°
RunScoreRun Score: 8Run Score: 9Run Score: 7Run Score: 8Run Score: 8Run Score: 7Run Score: 8

Mount Desert Island Marathon 2010

Oct 17, 2010
Partly cloudy throughout the day.
Low: 44°, High: 58°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 45°
clear-day 47°
clear-day 49°
clear-day 51°
clear-day 53°
clear-day 54°
partly-cloudy-day 56°
Feel39°42°45°51°53°54°56°
Rain-------
Wind14mph
10mph
10mph
16mph
23mph
22mph
23mph
Dew39°39°38°37°37°35°35°
RunScoreRun Score: 6Run Score: 8Run Score: 8Run Score: 7Run Score: 6Run Score: 6Run Score: 6

Mount Desert Island Marathon 2009

Oct 18, 2009
Partly cloudy throughout the day with rain.
Low: 36°, High: 44°, Heavy Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 38°
clear-day 38°
partly-cloudy-day 39°
cloudy 40°
cloudy 42°
cloudy 43°
cloudy 43°
Feel38°33°32°33°36°36°36°
Rain-------
Wind0mph
7mph
11mph
13mph
10mph
13mph
14mph
Dew29°30°30°32°30°30°32°
RunScoreRun Score: 7Run Score: 7Run Score: 6Run Score: 6Run Score: 7Run Score: 6Run Score: 6

Mount Desert Island Marathon 2008

Oct 19, 2008
Clear conditions throughout the day.
Low: 29°, High: 48°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 30°
clear-day 34°
clear-day 39°
clear-day 43°
clear-day 47°
clear-day 48°
clear-day 48°
Feel25°27°34°37°42°44°44°
Rain-------
Wind6mph
8mph
7mph
12mph
10mph
10mph
10mph
Dew23°25°29°25°25°25°25°
RunScoreRun Score: 6Run Score: 7Run Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8

Mount Desert Island Marathon 2007

Oct 14, 2007
Partly cloudy throughout the day.
Low: 39°, High: 52°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 43°
partly-cloudy-day 45°
partly-cloudy-day 47°
clear-day 48°
cloudy 50°
cloudy 50°
cloudy 52°
Feel37°41°44°45°50°50°52°
Rain-------
Wind10mph
6mph
5mph
8mph
8mph
7mph
11mph
Dew41°41°39°37°37°37°37°
RunScoreRun Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 8

Mount Desert Island Marathon 2006

Oct 15, 2006
Partly cloudy throughout the day.
Low: 37°, High: 54°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 43°
clear-day 47°
clear-day 48°
partly-cloudy-day 48°
clear-day 52°
clear-day 52°
clear-day 54°
Feel41°44°45°45°52°52°54°
Rain-------
Wind4mph
6mph
7mph
7mph
10mph
10mph
15mph
Dew30°30°30°30°29°29°29°
RunScoreRun Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 7

Mount Desert Island Marathon 2005

Oct 16, 2005
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 47°, High: 54°, Heavy Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
rain 51°
rain 52°
rain 52°
rain 50°
rain 48°
rain 48°
partly-cloudy-day 48°
Feel51°52°52°50°44°44°44°
Rainlightlightlightlightlightlight-
Wind13mph
12mph
13mph
9mph
10mph
10mph
11mph
Dew44°43°43°42°42°41°41°
RunScoreRun Score: 6Run Score: 6Run Score: 6Run Score: 6Run Score: 6Run Score: 6Run Score: 8

Mount Desert Island Marathon 2004

Oct 17, 2004
Partly cloudy throughout the day with morning rain.
Low: 48°, High: 57°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 52°
partly-cloudy-day 53°
partly-cloudy-day 53°
partly-cloudy-day 55°
clear-day 55°
clear-day 57°
clear-day 55°
Feel52°53°53°55°55°57°55°
Rain-------
Wind12mph
13mph
12mph
16mph
15mph
16mph
17mph
Dew47°47°47°42°38°37°40°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 7Run Score: 7Run Score: 7

Mount Desert Island Marathon 2003

Oct 19, 2003
Partly cloudy throughout the day.
Low: 38°, High: 46°
Time8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 40°
partly-cloudy-day 40°
clear-day 43°
partly-cloudy-day 45°
partly-cloudy-day 46°
partly-cloudy-day 46°
partly-cloudy-day 46°
Feel37°34°39°40°42°42°43°
Rain-------
Wind4mph
9mph
6mph
8mph
8mph
8mph
7mph
Dew30°30°30°27°25°21°25°
RunScoreRun Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mount Desert Island Marathon 2002

Oct 20, 2002
Partly cloudy throughout the day with morning rain.
Low: 32°, High: 52°, Light Rain
Time8AM9AM10AM11AM12PM1PM2PM
Temp
rain 46°
partly-cloudy-day 48°
cloudy 48°
cloudy 46°
cloudy 46°
cloudy 46°
partly-cloudy-day 46°
Feel43°46°43°44°43°43°42°
Rainlight------
Wind8mph
6mph
13mph
5mph
7mph
7mph
8mph
Dew43°45°41°39°36°36°36°
RunScoreRun Score: 6Run Score: 9Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8