Adirondack Marathon

Schroon Lake, NY, USA · September 27, 2026

52°·57° high·Breezy·Rain possible

Weather

Race Day Weather

52°at start

57° high

Breezy

Rain possible

Comfortable temps, moderate wind, chance of rain

Mild 52°F temps at gun time mean comfortable early miles without overheating risk. Moderate winds around 12mph may affect pacing on open sections of the course. There's a chance of rain, so have a backup gear plan ready. Moderate humidity at 76% is worth noting for effort level, especially in later miles.

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Distance: 26.2mi

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Race Info

The Marathon, Half Marathon, and Four-Person Relay take place around the picturesque 9-mile-long Schroon Lake on Sunday. On Saturday, runners can take on the 5K and 10K in Chestertown, or bring the kids along for the Kids Fun Run in Schroon Lake. Source

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Race weekend

Saturday, September 26

9:30 AM10K (6.2 mi)

9:30 AM5K (3.1 mi)

Sunday, September 27

8:00 AMMarathon (26.2 mi)

9:00 AMHalf Marathon (13.1 mi)

FAQ

When is the 2026 Adirondack Marathon?

The 2026 Adirondack Marathon will be held on Sunday September 27, 2026.

Is the Adirondack Marathon a Boston Marathon Qualifier?

Yes, the Adirondack Marathon is an official Boston Marathon qualifier.

What is the time limit for the Adirondack Marathon?

The time limit for the Adirondack Marathon is 7 hours.

What will the weather be like for the 2026 Adirondack Marathon?

The forecast calls for a high of 57°F and a low of 52°F with a 38% chance of rain.

Historical Weather

Based on 28 years of data

Avg Temp

62°F

L:51° H:69°

RunScore

Conditions

Rain Freq

18%

5 of 28 yrs

Wind5mph

Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Adirondack Marathon Clear conditions throughout the day. 2025	58°/83°	-	60°
2024 Adirondack Marathon Partly cloudy throughout the day. 2024	56°/70°	-	51°
2023 Adirondack Marathon Clearing in the afternoon. 2023	47°/77°	-	55°
2022 Adirondack Marathon Partly cloudy throughout the day with rain. 2022	62°/70°	Light	63°
2021 Adirondack Marathon Partly cloudy throughout the day with late afternoon rain. 2021	56°/64°	Light	58°
2019 Adirondack Marathon Partly cloudy throughout the day. 2019	51°/81°	-	57°
2018 Adirondack Marathon Clear conditions throughout the day. 2018	42°/64°	-	44°
2017 Adirondack Marathon Clear conditions throughout the day. 2017	60°/86°	-	64°
2016 Adirondack Marathon Clear conditions throughout the day with late afternoon rain. 2016	40°/62°	-	36°
2015 Adirondack Marathon Clear conditions throughout the day. 2015	47°/71°	-	45°
2014 Adirondack Marathon Clearing in the afternoon. 2014	55°/80°	-	59°
2013 Adirondack Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2013	55°/59°	Light	50°
2012 Adirondack Marathon Partly cloudy throughout the day with rain clearing later. 2012	50°/60°	Light	43°
2011 Adirondack Marathon Clearing in the afternoon. 2011	61°/76°	-	61°
2010 Adirondack Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2010	49°/65°	Light	50°
2009 Adirondack Marathon Clear conditions throughout the day. 2009	37°/66°	-	41°
2008 Adirondack Marathon Partly cloudy throughout the day with early morning rain. 2008	51°/61°	-	51°
2007 Adirondack Marathon Becoming cloudy in the afternoon. 2007	43°/59°	-	39°
2006 Adirondack Marathon Partly cloudy throughout the day. 2006	59°/72°	-	58°
2005 Adirondack Marathon Partly cloudy throughout the day. 2005	51°/62°	-	52°
2004 Adirondack Marathon Clear conditions throughout the day. 2004	53°/70°	-	48°
2003 Adirondack Marathon Cloudy skies throughout the day. 2003	50°/60°	-	54°
2002 Adirondack Marathon Partly cloudy throughout the day. 2002	63°/70°	-	65°
2001 Adirondack Marathon Partly cloudy throughout the day. 2001	57°/71°	-	58°
2000 Adirondack Marathon Partly cloudy throughout the day. 2000	47°/63°	-	51°
1999 Adirondack Marathon Clear conditions throughout the day. 1999	37°/65°	-	42°
1998 Adirondack Marathon Partly cloudy throughout the day. 1998	65°/79°	-	65°
1997 Adirondack Marathon Partly cloudy throughout the day. 1997	41°/57°	-	37°