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Silverton Alpine Marathon

Silverton, CO, USA

Partly cloudy throughout the day.

partly-cloudy-night
9
partly-cloudy-night
9
Details
clear-day
9
clear-day
9
partly-cloudy-day
8
partly-cloudy-day
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partly-cloudy-day
8
partly-cloudy-day
8
partly-cloudy-day
8
partly-cloudy-day
8
partly-cloudy-day
6
Light Rain
25%
partly-cloudy-day
8
partly-cloudy-day
8
partly-cloudy-day
8
Light Rain
30%
partly-cloudy-day
8
Pre-Race
Race
Post-Race
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Race Overview

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!
Wikipedia

FAQ

When is the 2027 Silverton Alpine Marathon?

The 2027 Silverton Alpine Marathon will be held on Saturday July 17, 2027.

What is the time limit for the Silverton Alpine Marathon?

The time limit for the Silverton Alpine Marathon is 10 hours.

Silverton Alpine Marathon Course Map

Loading Course Map...

Silverton Alpine Marathon Weather History

Silverton Alpine Marathon Weather Averages

Average Temp: 62°, Average Low: 51°, Average High: 74°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
52°
56°
61°
65°
69°
71°
72°
73°
71°
71°
70°
Feel51°56°61°65°69°71°71°73°71°71°70°
Rain-----------
Wind5mph
3mph
1mph
2mph
5mph
6mph
6mph
8mph
8mph
7mph
7mph
Dew37°37°38°36°34°34°33°34°34°34°35°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2026

Jul 18, 2026
Partly cloudy throughout the day with rain.
Low: 58°, High: 77°, Moderate Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
partly-cloudy-day 62°
clear-day 65°
clear-day 63°
clear-day 67°
clear-day 70°
partly-cloudy-day 74°
partly-cloudy-day 74°
partly-cloudy-day 77°
partly-cloudy-day 68°
rain 63°
rain 61°
Feel62°65°63°67°70°74°74°77°68°63°61°
Rain---------lightlight
Wind4mph
4mph
0mph
1mph
7mph
6mph
7mph
5mph
13mph
6mph
5mph
Dew52°53°48°49°47°49°47°49°50°51°52°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 6Run Score: 6

Silverton Alpine Marathon 2025

Jul 19, 2025
Partly cloudy throughout the day with early morning rain.
Low: 55°, High: 69°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
partly-cloudy-day 55°
cloudy 56°
partly-cloudy-day 62°
partly-cloudy-day 65°
partly-cloudy-day 69°
partly-cloudy-day 69°
partly-cloudy-day 66°
partly-cloudy-day 66°
cloudy 65°
cloudy 66°
cloudy 66°
Feel55°56°62°65°69°69°66°66°65°66°66°
Rain-----------
Wind7mph
0mph
5mph
0mph
8mph
6mph
4mph
16mph
2mph
2mph
1mph
Dew44°45°45°44°40°42°41°44°41°41°41°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 7Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2024

Jul 6, 2024
Clear conditions throughout the day.
Low: 47°, High: 73°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 47°
clear-day 54°
clear-day 60°
clear-day 65°
clear-day 66°
clear-day 69°
clear-day 70°
clear-day 71°
clear-day 71°
clear-day 73°
clear-day 73°
Feel44°54°60°65°66°69°70°71°71°73°73°
Rain-----------
Wind7mph
0mph
0mph
7mph
10mph
11mph
6mph
6mph
16mph
14mph
17mph
Dew21°21°25°8°13°11°6°9°11°7°6°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 9Run Score: 9Run Score: 7Run Score: 7Run Score: 7

Silverton Alpine Marathon 2023

Jul 8, 2023
Clear conditions throughout the day.
Low: 52°, High: 77°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 54°
clear-day 60°
clear-day 66°
clear-day 71°
clear-day 71°
clear-day 74°
clear-day 75°
partly-cloudy-day 76°
clear-day 76°
clear-day 77°
clear-day 76°
Feel54°60°66°71°71°74°75°76°76°77°76°
Rain-----------
Wind5mph
1mph
0mph
10mph
13mph
16mph
16mph
13mph
14mph
18mph
10mph
Dew24°23°27°11°11°13°12°10°10°8°9°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 7Run Score: 8Run Score: 7Run Score: 6Run Score: 8

Silverton Alpine Marathon 2022

Jul 9, 2022
Partly cloudy throughout the day.
Low: 53°, High: 81°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 56°
clear-day 63°
clear-day 70°
clear-day 74°
clear-day 78°
partly-cloudy-day 77°
partly-cloudy-day 79°
partly-cloudy-day 79°
partly-cloudy-day 79°
clear-day 81°
clear-day 79°
Feel56°63°70°74°78°77°79°79°79°79°79°
Rain-----------
Wind5mph
5mph
1mph
1mph
6mph
5mph
4mph
5mph
4mph
1mph
7mph
Dew28°32°33°32°31°31°32°31°33°34°33°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 8

Silverton Alpine Marathon 2021

Jul 10, 2021
Clear conditions throughout the day.
Low: 57°, High: 85°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 58°
clear-day 62°
clear-day 68°
clear-day 75°
clear-day 78°
clear-day 80°
clear-day 83°
clear-day 85°
clear-day 83°
clear-day 85°
clear-day 83°
Feel58°62°68°75°78°78°80°82°80°82°81°
Rain-----------
Wind5mph
1mph
0mph
4mph
7mph
8mph
4mph
5mph
3mph
4mph
4mph
Dew35°34°34°33°15°16°21°15°14°13°14°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2020

Jul 11, 2020
Clear conditions throughout the day.
Low: 51°, High: 89°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 55°
clear-day 63°
clear-day 69°
clear-day 76°
clear-day 79°
clear-day 82°
clear-day 83°
clear-day 89°
clear-day 87°
clear-day 85°
clear-day 85°
Feel55°63°69°76°79°80°80°85°84°82°82°
Rain-----------
Wind6mph
2mph
0mph
3mph
5mph
9mph
8mph
5mph
11mph
4mph
11mph
Dew14°15°20°13°11°12°14°17°18°19°19°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7Run Score: 8Run Score: 7

Silverton Alpine Marathon 2019

Jul 14, 2019
Partly cloudy throughout the day with rain clearing later.
Low: 53°, High: 76°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
rain 54°
partly-cloudy-day 59°
partly-cloudy-day 61°
partly-cloudy-day 65°
partly-cloudy-day 70°
partly-cloudy-day 73°
partly-cloudy-day 74°
partly-cloudy-day 76°
partly-cloudy-day 76°
partly-cloudy-day 76°
partly-cloudy-day 71°
Feel54°59°61°65°70°73°74°76°76°76°71°
Rainlight----------
Wind5mph
3mph
2mph
0mph
2mph
6mph
6mph
6mph
6mph
9mph
10mph
Dew50°49°50°50°44°42°42°44°43°44°43°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2018

Jul 28, 2018
Partly cloudy throughout the day.
Low: 52°, High: 76°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 54°
clear-day 58°
clear-day 63°
clear-day 68°
partly-cloudy-day 71°
partly-cloudy-day 71°
partly-cloudy-day 73°
partly-cloudy-day 74°
partly-cloudy-day 74°
partly-cloudy-day 75°
partly-cloudy-day 76°
Feel54°58°63°68°71°71°73°74°74°75°76°
Rain-----------
Wind5mph
3mph
1mph
1mph
5mph
5mph
8mph
7mph
9mph
6mph
11mph
Dew42°43°46°45°44°43°43°43°43°37°34°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2017

Aug 19, 2017
Partly cloudy throughout the day.
Low: 52°, High: 75°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
partly-cloudy-day 52°
partly-cloudy-day 55°
partly-cloudy-day 61°
clear-day 69°
partly-cloudy-day 72°
partly-cloudy-day 73°
partly-cloudy-day 73°
clear-day 75°
partly-cloudy-day 72°
partly-cloudy-day 75°
clear-day 75°
Feel52°55°61°69°72°73°73°75°72°75°75°
Rain-----------
Wind7mph
6mph
0mph
0mph
6mph
9mph
7mph
6mph
8mph
6mph
2mph
Dew34°34°33°34°27°27°26°28°30°30°29°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2016

Aug 20, 2016
Clear conditions throughout the day.
Low: 49°, High: 74°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 49°
clear-day 52°
partly-cloudy-day 57°
clear-day 62°
clear-day 67°
clear-day 69°
clear-day 70°
clear-day 71°
clear-day 72°
clear-day 74°
clear-day 73°
Feel47°52°57°62°67°69°70°71°72°74°73°
Rain-----------
Wind6mph
4mph
1mph
1mph
7mph
9mph
5mph
14mph
9mph
10mph
9mph
Dew40°40°42°39°39°38°38°34°33°32°32°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2015

Aug 22, 2015
Partly cloudy throughout the day with late afternoon rain.
Low: 52°, High: 78°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 52°
clear-day 56°
partly-cloudy-day 61°
clear-day 68°
partly-cloudy-day 71°
partly-cloudy-day 73°
partly-cloudy-day 75°
clear-day 78°
partly-cloudy-day 71°
partly-cloudy-day 66°
cloudy 63°
Feel52°56°61°68°71°73°75°78°71°66°63°
Rain-----------
Wind5mph
5mph
0mph
1mph
1mph
4mph
9mph
8mph
5mph
11mph
2mph
Dew36°38°41°40°40°39°39°38°42°46°43°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2014

Aug 23, 2014
Partly cloudy throughout the day with rain.
Low: 52°, High: 66°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
rain 52°
rain 53°
partly-cloudy-day 57°
partly-cloudy-day 57°
cloudy 59°
partly-cloudy-day 62°
rain 63°
rain 64°
cloudy 57°
cloudy 66°
rain 56°
Feel52°53°57°57°59°62°63°64°57°66°56°
Rainlightlight----lightlight--light
Wind1mph
1mph
3mph
1mph
4mph
8mph
10mph
6mph
13mph
8mph
10mph
Dew45°47°45°46°46°44°43°50°48°51°50°
RunScoreRun Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2013

Aug 24, 2013
Partly cloudy throughout the day with rain.
Low: 55°, High: 65°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
cloudy 58°
cloudy 58°
partly-cloudy-day 59°
partly-cloudy-day 62°
partly-cloudy-day 64°
cloudy 65°
cloudy 65°
rain 65°
cloudy 59°
partly-cloudy-day 62°
partly-cloudy-day 65°
Feel58°58°59°62°64°65°65°65°59°62°65°
Rain-------light---
Wind1mph
1mph
1mph
3mph
1mph
4mph
6mph
8mph
2mph
2mph
7mph
Dew43°45°45°45°44°43°45°44°49°47°45°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 9

Silverton Alpine Marathon 2012

Aug 25, 2012
Clear conditions throughout the day.
Low: 47°, High: 73°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 48°
clear-day 52°
clear-day 57°
clear-day 62°
clear-day 68°
clear-day 70°
partly-cloudy-day 72°
partly-cloudy-day 73°
partly-cloudy-day 72°
partly-cloudy-day 69°
partly-cloudy-day 66°
Feel46°52°57°62°68°70°72°73°72°69°66°
Rain-----------
Wind5mph
4mph
1mph
0mph
2mph
3mph
7mph
9mph
11mph
10mph
7mph
Dew43°43°44°43°40°37°37°38°38°39°44°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9

Silverton Alpine Marathon 2011

Aug 27, 2011
Partly cloudy throughout the day with early morning rain.
Low: 54°, High: 76°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 54°
clear-day 56°
clear-day 61°
clear-day 66°
clear-day 72°
clear-day 74°
partly-cloudy-day 76°
partly-cloudy-day 75°
partly-cloudy-day 73°
partly-cloudy-day 70°
partly-cloudy-day 72°
Feel54°56°61°66°72°74°76°75°73°70°72°
Rain-----------
Wind6mph
4mph
2mph
1mph
5mph
6mph
8mph
9mph
4mph
11mph
3mph
Dew49°48°50°47°46°44°42°44°48°49°49°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Silverton Alpine Marathon 2010

Aug 28, 2010
Partly cloudy throughout the day.
Low: 54°, High: 66°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 54°
partly-cloudy-day 56°
partly-cloudy-day 63°
cloudy 62°
cloudy 63°
cloudy 63°
cloudy 64°
cloudy 64°
partly-cloudy-day 66°
cloudy 66°
cloudy 63°
Feel54°56°63°62°63°63°64°64°66°66°63°
Rain-----------
Wind4mph
1mph
4mph
1mph
1mph
1mph
1mph
8mph
9mph
9mph
7mph
Dew40°41°43°43°40°41°43°43°44°44°47°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 9

Silverton Alpine Marathon 2009

Aug 29, 2009
Clear conditions throughout the day.
Low: 52°, High: 86°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 53°
clear-day 58°
clear-day 65°
clear-day 71°
clear-day 75°
clear-day 80°
clear-day 84°
clear-day 86°
clear-day 86°
clear-day 83°
clear-day 85°
Feel53°58°65°71°75°79°81°83°83°80°82°
Rain-----------
Wind6mph
2mph
2mph
3mph
3mph
3mph
7mph
4mph
7mph
9mph
12mph
Dew36°37°36°35°37°36°34°30°31°33°33°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7

Silverton Alpine Marathon 2006

Aug 26, 2006
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 46°, High: 63°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
partly-cloudy-day 48°
partly-cloudy-day 49°
cloudy 53°
rain 52°
partly-cloudy-day 56°
partly-cloudy-day 59°
partly-cloudy-day 61°
rain 63°
cloudy 56°
partly-cloudy-day 58°
partly-cloudy-day 56°
Feel48°47°53°52°56°59°61°63°56°58°56°
Rain-light-lightlightlightlightlightlight--
Wind1mph
5mph
0mph
5mph
4mph
1mph
2mph
5mph
12mph
6mph
4mph
Dew45°46°46°48°46°43°43°37°40°43°42°
RunScoreRun Score: 8Run Score: 9Run Score: 8Run Score: 7Run Score: 9Run Score: 8Run Score: 8Run Score: 7Run Score: 8Run Score: 9Run Score: 9

Silverton Alpine Marathon 2005

Aug 27, 2005
Partly cloudy throughout the day.
Low: 45°, High: 70°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 45°
clear-day 50°
clear-day 54°
clear-day 61°
partly-cloudy-day 66°
partly-cloudy-day 68°
partly-cloudy-day 65°
partly-cloudy-day 65°
partly-cloudy-day 70°
partly-cloudy-day 63°
cloudy 57°
Feel42°50°54°61°66°68°65°65°70°63°57°
Rain-----------
Wind6mph
0mph
0mph
0mph
6mph
0mph
5mph
15mph
5mph
5mph
0mph
Dew34°34°36°34°30°30°27°29°27°27°38°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 9Run Score: 7Run Score: 9Run Score: 9Run Score: 8

Silverton Alpine Marathon 2004

Aug 28, 2004
Clear conditions throughout the day.
Low: 34°, High: 70°
Time7AM8AM9AM10AM11AM12PM1PM2PM3PM4PM5PM
Temp
clear-day 36°
clear-day 39°
clear-day 48°
partly-cloudy-day 56°
partly-cloudy-day 63°
partly-cloudy-day 61°
partly-cloudy-day 65°
partly-cloudy-day 66°
partly-cloudy-day 66°
partly-cloudy-day 70°
clear-day 68°
Feel31°36°48°56°63°61°65°66°66°70°68°
Rain-----------
Wind6mph
5mph
0mph
0mph
11mph
13mph
9mph
8mph
15mph
7mph
6mph
Dew18°18°20°25°29°29°27°29°27°29°27°
RunScoreRun Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 7Run Score: 9Run Score: 9