Aspen Valley Marathon

Basalt, CO, USA · July 25, 2026

52°·72° high·Light·Dry

Weather

Course

FAQ

History

Race Day Weather

52°at start

73° high

Light

Dry

Cool start, warming trend

Runners will face a temperature rise from 52°F at the start to a peak of 73°F. Winds will be light at 5 mph from the SW, with gusts up to 22 mph. Given the humidity at 61%, pacing adjustments are recommended as temperatures climb, especially in the latter stages.

Race day forecast available in 3 days

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Race Info

Website

Course Map

FAQ

When is the 2026 Aspen Valley Marathon?

The 2026 Aspen Valley Marathon will be held on Saturday July 25, 2026.

Is the Aspen Valley Marathon a Boston Marathon Qualifier?

Yes, the Aspen Valley Marathon is an official Boston Marathon qualifier.

What is the time limit for the Aspen Valley Marathon?

The time limit for the Aspen Valley Marathon is 7 hours.

What will the weather be like for the 2026 Aspen Valley Marathon?

The forecast calls for a high of 75°F and a low of 50°F with a 9% chance of rain.

Historical Weather

Based on 14 years of data

Avg Temp

77°F

L:50° H:78°

RunScore

Conditions

Rain Freq

1 of 14 yrs

Wind8mph

Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Aspen Valley Marathon Partly cloudy throughout the day with morning rain. 2025	54°/78°	Light	45°
2024 Aspen Valley Marathon Clear conditions throughout the day. 2024	53°/88°	-	35°
2023 Aspen Valley Marathon Clear conditions throughout the day. 2023	49°/80°	-	32°
2022 Aspen Valley Marathon Partly cloudy throughout the day with early morning rain. 2022	53°/78°	-	52°
2021 Aspen Valley Marathon Clear conditions throughout the day. 2021	21°/50°	-	20°
2019 Aspen Valley Marathon Clear conditions throughout the day with late afternoon rain. 2019	50°/85°	-	41°
2018 Aspen Valley Marathon Partly cloudy throughout the day. 2018	59°/86°	-	43°
2017 Aspen Valley Marathon Clear conditions throughout the day. 2017	50°/80°	-	45°
2016 Aspen Valley Marathon Clear conditions throughout the day. 2016	50°/84°	-	29°
2015 Aspen Valley Marathon Partly cloudy throughout the day with rain. 2015	51°/76°	-	41°
2014 Aspen Valley Marathon Clear conditions throughout the day. 2014	51°/81°	-	40°
2013 Aspen Valley Marathon Clear conditions throughout the day. 2013	51°/82°	-	44°
2012 Aspen Valley Marathon Partly cloudy throughout the day with rain. 2012	54°/72°	-	53°
2011 Aspen Valley Marathon Partly cloudy throughout the day with early morning rain. 2011	51°/68°	-	51°

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