The 2025 event has concluded.

Silverton Alpine Marathon

Silverton, CO, USA • July 19, 2025
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Race Day Weather

rain
55°
69° high
Windy
Dry

Comfortable temps, warming through the race, moderate wind

Mild 55°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 69°F through the course will gradually increase perceived effort in the second half. Moderate winds around 16 mph may affect pacing on open sections of the course.

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Pre-raceRace windowPost-race

Get ready to experience an epic trail adventure! The 50K and Marathon (~26.7 miles) loop takes you through the heart of the San Juan Mountains, following the historic Alpine Loop jeep roads. Along the way, you’ll pass through ghost mining towns such as Howardsville, Eureka, Animas Forks, and Gladstone. The course’s high point is California Pass, sitting at a breathtaking 12,930 feet! Source

Area Map

Course Map

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When is the 2025 Silverton Alpine Marathon?

The 2025 Silverton Alpine Marathon will be held on Saturday July 19, 2025.

Historical Weather

Based on 16 years of data
Avg Temp
74°F
L:54° H:75°
RunScore
8
Conditions
Rain Freq
25%
4 of 16 yrs
Wind7mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2024 Silverton Alpine Marathon

Clear conditions throughout the day.

2024
clear-day
47°/71°-
9

2023 Silverton Alpine Marathon

Clear conditions throughout the day.

2023
clear-day
54°/76°-
8

2022 Silverton Alpine Marathon

Partly cloudy throughout the day.

2022
clear-day
56°/79°-
8

2021 Silverton Alpine Marathon

Clear conditions throughout the day.

2021
clear-day
58°/85°-
8

2020 Silverton Alpine Marathon

Clear conditions throughout the day.

2020
clear-day
55°/89°-
8

2019 Silverton Alpine Marathon

Partly cloudy throughout the day with rain clearing later.

2019
rain
54°/76°Light
8

2018 Silverton Alpine Marathon

Partly cloudy throughout the day.

2018
clear-day
54°/74°-
8

2017 Silverton Alpine Marathon

Partly cloudy throughout the day with rain.

2017
partly-cloudy-day
62°/77°Light
8

2016 Silverton Alpine Marathon

Clear conditions throughout the day.

2016
clear-day
49°/71°-
8

2015 Silverton Alpine Marathon

Partly cloudy throughout the day with late afternoon rain.

2015
clear-day
52°/78°-
8

2014 Silverton Alpine Marathon

Partly cloudy throughout the day with rain.

2014
rain
52°/64°Light
8

2013 Silverton Alpine Marathon

Partly cloudy throughout the day with rain.

2013
cloudy
58°/65°Light
8

2012 Silverton Alpine Marathon

Clear conditions throughout the day.

2012
clear-day
48°/73°-
8

2011 Silverton Alpine Marathon

Partly cloudy throughout the day with early morning rain.

2011
clear-day
54°/76°-
8

2010 Silverton Alpine Marathon

Partly cloudy throughout the day.

2010
clear-day
54°/64°-
8

2009 Silverton Alpine Marathon

Clear conditions throughout the day.

2009
clear-day
53°/86°-
8
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