Aspen Backcountry Marathon

Aspen, CO, USA · July 31, 2027

50°·71° high·Light·Dry

Weather

Race Day Weather

50°at start

71° high

Light

Dry

Cool start, warm finish

Runners will face a cool start at 53°F, warming to 70°F by the finish. With light winds at 5 mph from the west, the wind will not be a significant factor. The hilly course will challenge runners from mile 3 to 8 with a tough climb, while the descent from mile 13 to 18 will provide relief. Runners should pace conservatively early to manage the temperature rise and stay hydrated.

Race day forecast available in 249 days

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Distance: 26.2mi

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Race Info

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FAQ

When is the 2027 Aspen Backcountry Marathon?

The 2027 Aspen Backcountry Marathon will be held on Saturday July 31, 2027.

What will the weather be like for the 2027 Aspen Backcountry Marathon?

The forecast calls for a high of 72°F and a low of 48°F with a 11% chance of rain.

Historical Weather

Based on 6 years of data

Avg Temp

76°F

L:56° H:77°

RunScore

Conditions

Rain Freq

33%

2 of 6 yrs

Wind8mph

Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2026 Aspen Backcountry Marathon Clear conditions throughout the day. 2026	62°/87°	-	32°
2025 Aspen Backcountry Marathon Partly cloudy throughout the day with morning rain. 2025	58°/77°	Light	41°
2023 Aspen Backcountry Marathon Partly cloudy throughout the day. 2023	52°/75°	-	40°
2022 Aspen Backcountry Marathon Partly cloudy throughout the day with rain. 2022	57°/77°	-	45°
2019 Aspen Backcountry Marathon Partly cloudy throughout the day with rain in the morning and afternoon. 2019	57°/63°	Light	50°
2011 Aspen Backcountry Marathon Partly cloudy throughout the day. 2011	53°/82°	-	40°

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