The 2026 Aspen Valley Half Marathon has concluded.

Aspen Valley Half Marathon

Race complete
Aspen, CO, USA · July 25, 2026·
clear-day58°·71° high·Light·Dry
7
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Aspen Valley Half Marathon race day weather

clear-day
58°at start
87° high
Breezy
Dry
Your goal
0:00:00

Comfortable temps, big temp swing, moderate wind

Mild 58°F temps at gun time mean comfortable early miles without overheating risk. Temps will climb significantly to 87°F by later miles, so expect fading conditions as the race progresses. Moderate winds around 15mph may affect pacing on open sections of the course.

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clear-night8
clear-day8
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partly-cloudy-day3
partly-cloudy-day4
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Pace Calculator

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About the Aspen Valley Half Marathon

The Aspen Valley Marathon half marathon covers 13.1 miles from the Woody Creek area of the Roaring Fork Valley to a finish in Basalt, on the Saturday of race weekend. It follows the Rio Grande Trail and quiet valley roads downvalley toward Basalt on a mostly downhill profile. Much of the route is open and exposed to the sun.

Race weekend

Saturday, July 25
6:00 AMMarathon (26.2 mi)
7:30 AMHalf Marathon (13.1 mi)
10:30 AM5K (3.1 mi)
Area Map
Course Map

Aspen Valley Half Marathon FAQ

When is the 2026 Aspen Valley Half Marathon?

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

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

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

What is the weather usually like for the Aspen Valley Half Marathon?

Over the 15 years racecast.io has race-day weather for (2011 to 2026), it averaged 51°F at the start and 62°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Aspen Valley Half Marathon?

Of the 15 years on record, 2026 was the warmest, reaching 71°F during race hours. The coldest start was 2021, at 20°F.

What was the windiest Aspen Valley Half Marathon?

Of the 15 years on record, 2025 was the windiest, with wind averaging 7 mph during race hours. The calmest was 2011, at 0 mph.

Aspen Valley Half Marathon weather history

Based on 15 years of data
Avg Temp
56°F
L:51° H:62°
RunScore
8
Conditions
Rain Freq
0%
0 of 15 yrs
Wind3mph
Dew41°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-day
58°/71°-
7
2025
cloudy
54°/62°-
8
2024
clear-day
55°/67°-
8
2023
clear-day
50°/63°-
9
2022
partly-cloudy-day
51°/63°-
8
2021
clear-night
20°/28°-
10
2019
clear-day
53°/68°-
8
2018
partly-cloudy-day
60°/71°-
7
2017
clear-day
50°/63°-
9
2016
clear-day
54°/69°-
8
2015
clear-day
54°/66°-
8
2014
clear-day
52°/66°-
9
2013
clear-day
49°/63°-
9
2012
cloudy
54°/57°-
8
2011
partly-cloudy-day
52°/57°-
9