The 2026 Aspen Valley Marathon has concluded.

Aspen Valley Marathon

Race complete
Aspen, CO, USA · July 25, 2026
clear-day58°·87° high·Breezy·Dry
8
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Race Day Weather

clear-day
58°at start
87° high
Breezy
Dry

Warm afternoon, adjust pace accordingly

Runners will face a temperature increase from 60°F at the start up to 87°F by midday, with humidity around 41%. A light tailwind will assist from miles 2-11 and again from 13-14, but expect crosswinds during other segments, particularly tough from miles 12-16 and 18-22. Given the heat, runners should start conservatively and hydrate frequently to cope with the rising temperatures.

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Race Info

The Aspen Valley Marathon is an annual point-to-point race held each July in Colorado's Roaring Fork Valley. The marathon starts at Wagner Park in downtown Aspen and finishes 26.2 miles later at Lions Park in Basalt, following the Rio Grande Trail. The course drops from about 7,900 feet at the start to roughly 6,500 feet by mile 20 before a rolling final stretch to the finish. Race weekend also includes a half marathon starting in Woody Creek and a 5K starting in Basalt.

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 8 hours.

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

The forecast calls for a high of 87°F and a low of 58°F with a 0% chance of rain.

Historical Weather

Based on 14 years of data
Avg Temp
78°F
L:50° H:79°
RunScore
8
Conditions
Rain Freq
14%
2 of 14 yrs
Wind8mph
Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
rain
54°/80°Light
8
2024
clear-day
53°/88°-
8
2023
clear-day
49°/82°-
8
2022
clear-day
53°/78°-
8
2021
clear-night
21°/55°-
7
2019
clear-day
50°/85°-
8
2018
clear-day
59°/88°-
8
2017
clear-day
50°/82°-
8
2016
clear-day
50°/86°-
8
2015
clear-day
51°/76°Light
8
2014
clear-day
51°/81°-
8
2013
clear-day
51°/85°-
8
2012
partly-cloudy-day
54°/75°-
8
2011
partly-cloudy-day
51°/68°-
8