Adirondack Marathon

Schroon Lake, NY, USA · September 27, 2026

55°·70° high·Light·Dry

Weather

Race Day Weather

55°at start

71° high

Light

Dry

Warm finish, light winds

Runners will face rising temperatures from 55°F at the start to 71°F by the finish, with humidity averaging 70%. Winds will be light at 5 mph, becoming a non-factor. Runners should consider adjusting their pace as it warms up and stay mindful of hydration, especially during the latter stages.

Race day forecast available in 10 days

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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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FAQ

When is the 2026 Adirondack Marathon?

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

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 69°F and a low of 52°F with a 11% chance of rain.

Historical Weather

Based on 28 years of data

Avg Temp

68°F

L:51° H:69°

RunScore

Conditions

Rain Freq

18%

5 of 28 yrs

Wind6mph

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°