Silverton Alpine Marathon

Silverton, CO, USA • July 18, 2026

Race Day Weather

55°

74° high

Light

Dry

Cool start, warming trend

Runners will face a temperature rise from 55°F at the start to 74°F by the finish. Winds will be light at 7 mph from the S, with occasional gusts up to 24 mph. With humidity at a comfortable 40%, hydration should be regular, but runners can maintain normal pacing throughout the race.

Race day forecast available in 113 days

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Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

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Pace

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Common Goals:

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

Course Map

FAQ

When is the 2026 Silverton Alpine Marathon?

The 2026 Silverton Alpine Marathon will be held on Saturday July 18, 2026.

Historical Weather

Based on 17 years of data

Avg Temp

74°F

L:54° H:75°

RunScore

Conditions

Rain Freq

24%

4 of 17 yrs

Wind8mph

Dew35°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Silverton Alpine Marathon Partly cloudy throughout the day with early morning rain. 2025	55°/69°	-	43°
2024 Silverton Alpine Marathon Clear conditions throughout the day. 2024	47°/71°	-	14°
2023 Silverton Alpine Marathon Clear conditions throughout the day. 2023	54°/76°	-	16°
2022 Silverton Alpine Marathon Partly cloudy throughout the day. 2022	56°/79°	-	31°
2021 Silverton Alpine Marathon Clear conditions throughout the day. 2021	58°/85°	-	25°
2020 Silverton Alpine Marathon Clear conditions throughout the day. 2020	55°/89°	-	14°
2019 Silverton Alpine Marathon Partly cloudy throughout the day with rain clearing later. 2019	54°/76°	Light	46°
2018 Silverton Alpine Marathon Partly cloudy throughout the day. 2018	54°/74°	-	43°
2017 Silverton Alpine Marathon Partly cloudy throughout the day with rain. 2017	62°/77°	Light	48°
2016 Silverton Alpine Marathon Clear conditions throughout the day. 2016	49°/71°	-	39°
2015 Silverton Alpine Marathon Partly cloudy throughout the day with late afternoon rain. 2015	52°/78°	-	39°
2014 Silverton Alpine Marathon Partly cloudy throughout the day with rain. 2014	52°/64°	Light	46°
2013 Silverton Alpine Marathon Partly cloudy throughout the day with rain. 2013	58°/65°	Light	44°
2012 Silverton Alpine Marathon Clear conditions throughout the day. 2012	48°/73°	-	41°
2011 Silverton Alpine Marathon Partly cloudy throughout the day with early morning rain. 2011	54°/76°	-	46°
2010 Silverton Alpine Marathon Partly cloudy throughout the day. 2010	54°/64°	-	42°
2009 Silverton Alpine Marathon Clear conditions throughout the day. 2009	53°/86°	-	35°