Adirondack Marathon

Runners will face a temperature range from 55°F at the start to 70°F by race end, with humidity at 69%. A light headwind will persist from miles 1 to 9, making those early climbs more challenging. As the temperature rises, athletes should start conservatively and hydrate frequently, particularly through the rolling terrain of miles 20 to 24 where climbs and switchbacks may increase effort.

Race day forecast available in 336 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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Race weekend

Saturday, September 25

9:30 AM10K (6.2 mi)

9:30 AM5K (3.1 mi)

Sunday, September 26

8:00 AMMarathon (26.2 mi)

9:00 AMHalf Marathon (13.1 mi)

FAQ

When is the 2027 Adirondack Marathon?

The 2027 Adirondack Marathon will be held on Sunday September 26, 2027.

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 2027 Adirondack Marathon?

The forecast calls for a high of 70°F and a low of 53°F with a 10% chance of rain.

Historical Weather

Based on 29 years of data

Avg Temp

58°F

L:52° H:64°

RunScore

Conditions

Rain Freq

17%

5 of 29 yrs

Wind4mph

Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Adirondack Marathon Partly cloudy throughout the day with afternoon rain. 2026	56°/58°	Light	50°
2025 Adirondack Marathon Clear conditions throughout the day. 2025	58°/75°	-	60°
2024 Adirondack Marathon Partly cloudy throughout the day. 2024	56°/67°	-	52°
2023 Adirondack Marathon Clearing in the afternoon. 2023	47°/70°	-	53°
2022 Adirondack Marathon Partly cloudy throughout the day with rain. 2022	62°/69°	-	61°
2021 Adirondack Marathon Partly cloudy throughout the day with late afternoon rain. 2021	56°/59°	Light	57°
2019 Adirondack Marathon Partly cloudy throughout the day. 2019	51°/74°	-	54°
2018 Adirondack Marathon Clear conditions throughout the day. 2018	42°/59°	-	44°
2017 Adirondack Marathon Clear conditions throughout the day. 2017	60°/80°	-	63°
2016 Adirondack Marathon Clear conditions throughout the day with late afternoon rain. 2016	40°/57°	-	38°
2015 Adirondack Marathon Clear conditions throughout the day. 2015	47°/65°	-	45°
2014 Adirondack Marathon Clearing in the afternoon. 2014	55°/72°	-	59°
2013 Adirondack Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2013	55°/59°	Light	51°
2012 Adirondack Marathon Partly cloudy throughout the day with rain clearing later. 2012	50°/59°	Light	44°
2011 Adirondack Marathon Clearing in the afternoon. 2011	61°/71°	-	61°
2010 Adirondack Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2010	49°/61°	Light	50°
2009 Adirondack Marathon Clear conditions throughout the day. 2009	37°/58°	-	41°
2008 Adirondack Marathon Partly cloudy throughout the day with early morning rain. 2008	51°/60°	-	51°
2007 Adirondack Marathon Becoming cloudy in the afternoon. 2007	43°/56°	-	39°
2006 Adirondack Marathon Partly cloudy throughout the day. 2006	59°/65°	-	57°
2005 Adirondack Marathon Partly cloudy throughout the day. 2005	51°/61°	-	51°
2004 Adirondack Marathon Clear conditions throughout the day. 2004	53°/65°	-	50°
2003 Adirondack Marathon Cloudy skies throughout the day. 2003	50°/60°	-	55°
2002 Adirondack Marathon Partly cloudy throughout the day. 2002	63°/69°	-	65°
2001 Adirondack Marathon Partly cloudy throughout the day. 2001	57°/67°	-	58°
2000 Adirondack Marathon Partly cloudy throughout the day. 2000	47°/63°	-	53°
1999 Adirondack Marathon Clear conditions throughout the day. 1999	37°/60°	-	42°
1998 Adirondack Marathon Partly cloudy throughout the day. 1998	65°/74°	-	65°
1997 Adirondack Marathon Partly cloudy throughout the day. 1997	41°/50°	-	37°