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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!
WikipediaFAQ
When is the 2026 Silverton Alpine Marathon?
The 2026 Silverton Alpine Marathon will be held on Saturday July 18, 2026.
Silverton Alpine Marathon Weather History
Silverton Alpine Marathon Weather Averages
Average Temp: 64°, Average Low: 53°, Average High: 76°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 54° | 57° | 63° | 67° | 70° | 72° | 73° | 74° |
| Feel | 53° | 57° | 63° | 67° | 70° | 72° | 73° | 73° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 2mph | 2mph | 2mph | 5mph | 6mph | 7mph | 8mph |
| Dew | 37° | 38° | 40° | 37° | 35° | 34° | 34° | 35° |
| RunScore |  |  | | | | | | |
Silverton Alpine Marathon 2025
Jul 19, 2025
Partly cloudy throughout the day with early morning rain.
Low: 55°, High: 69°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 55° |  56° | 62° | 65° | 69° | 69° | 66° | 66° |
| Feel | 55° | 56° | 62° | 65° | 69° | 69° | 66° | 66° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 0mph | 5mph | 0mph | 8mph | 6mph | 4mph | 16mph |
| Dew | 44° | 45° | 45° | 44° | 40° | 42° | 41° | 44° |
| RunScore | | | | | | | |  |
Silverton Alpine Marathon 2024
Jul 6, 2024
Clear conditions throughout the day.
Low: 47°, High: 73°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  47° | 54° | 60° | 65° | 66° | 69° | 70° | 71° |
| Feel | 44° | 54° | 60° | 65° | 66° | 69° | 70° | 71° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 0mph | 0mph | 7mph | 10mph | 11mph | 6mph | 6mph |
| Dew | 21° | 21° | 25° | 8° | 13° | 11° | 6° | 9° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2023
Jul 8, 2023
Clear conditions throughout the day.
Low: 52°, High: 77°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 54° | 60° | 66° | 71° | 71° | 74° | 75° | 76° |
| Feel | 54° | 60° | 66° | 71° | 71° | 74° | 75° | 76° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 1mph | 0mph | 10mph | 13mph | 16mph | 16mph | 13mph |
| Dew | 24° | 23° | 27° | 11° | 11° | 13° | 12° | 10° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2022
Jul 9, 2022
Partly cloudy throughout the day.
Low: 53°, High: 81°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 56° | 63° | 70° | 74° | 78° | 77° | 79° | 79° |
| Feel | 56° | 63° | 70° | 74° | 78° | 77° | 79° | 79° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 5mph | 1mph | 1mph | 6mph | 5mph | 4mph | 5mph |
| Dew | 28° | 32° | 33° | 32° | 31° | 31° | 32° | 31° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2021
Jul 10, 2021
Clear conditions throughout the day.
Low: 57°, High: 85°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 58° | 62° | 68° | 75° | 78° | 80° | 83° | 85° |
| Feel | 58° | 62° | 68° | 75° | 78° | 78° | 80° | 82° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 1mph | 0mph | 4mph | 7mph | 8mph | 4mph | 5mph |
| Dew | 35° | 34° | 34° | 33° | 15° | 16° | 21° | 15° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2020
Jul 11, 2020
Clear conditions throughout the day.
Low: 51°, High: 89°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 55° | 63° | 69° | 76° | 79° | 82° | 83° | 89° |
| Feel | 55° | 63° | 69° | 76° | 79° | 80° | 80° | 85° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 6mph | 2mph | 0mph | 3mph | 5mph | 9mph | 8mph | 5mph |
| Dew | 14° | 15° | 20° | 13° | 11° | 12° | 14° | 17° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2019
Jul 14, 2019
Partly cloudy throughout the day with rain clearing later.
Low: 53°, High: 76°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  54° | 59° | 61° | 65° | 70° | 73° | 74° | 76° |
| Feel | 54° | 59° | 61° | 65° | 70° | 73° | 74° | 76° |
| Rain | light | - | - | - | - | - | - | - |
| Wind | 5mph | 3mph | 2mph | 0mph | 2mph | 6mph | 6mph | 6mph |
| Dew | 50° | 49° | 50° | 50° | 44° | 42° | 42° | 44° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2018
Jul 28, 2018
Partly cloudy throughout the day.
Low: 52°, High: 76°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 54° | 58° | 63° | 68° | 71° | 71° | 73° | 74° |
| Feel | 54° | 58° | 63° | 68° | 71° | 71° | 73° | 74° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 3mph | 1mph | 1mph | 5mph | 5mph | 8mph | 7mph |
| Dew | 42° | 43° | 46° | 45° | 44° | 43° | 43° | 43° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2017
Jul 19, 2017
Partly cloudy throughout the day with rain.
Low: 59°, High: 77°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 62° | 62° | 64° | 71° | 75° | 77° | 73° | 68° |
| Feel | 62° | 62° | 64° | 71° | 75° | 77° | 73° | 68° |
| Rain | - | - | - | - | - | - | - | light |
| Wind | 6mph | 7mph | 2mph | 4mph | 1mph | 1mph | 13mph | 4mph |
| Dew | 48° | 49° | 50° | 48° | 47° | 46° | 47° | 54° |
| RunScore | | | | | | | |  |
Silverton Alpine Marathon 2016
Aug 20, 2016
Clear conditions throughout the day.
Low: 49°, High: 74°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 49° | 52° | 57° | 62° | 67° | 69° | 70° | 71° |
| Feel | 47° | 52° | 57° | 62° | 67° | 69° | 70° | 71° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 6mph | 4mph | 1mph | 1mph | 7mph | 9mph | 5mph | 14mph |
| Dew | 40° | 40° | 42° | 39° | 39° | 38° | 38° | 34° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2015
Aug 22, 2015
Partly cloudy throughout the day with late afternoon rain.
Low: 52°, High: 78°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 52° | 56° | 61° | 68° | 71° | 73° | 75° | 78° |
| Feel | 52° | 56° | 61° | 68° | 71° | 73° | 75° | 78° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 5mph | 0mph | 1mph | 1mph | 4mph | 9mph | 8mph |
| Dew | 36° | 38° | 41° | 40° | 40° | 39° | 39° | 38° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2014
Aug 23, 2014
Partly cloudy throughout the day with rain.
Low: 52°, High: 66°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 52° | 53° | 57° | 57° | 59° | 62° | 63° | 64° |
| Feel | 52° | 53° | 57° | 57° | 59° | 62° | 63° | 64° |
| Rain | light | light | - | - | - | - | light | light |
| Wind | 1mph | 1mph | 3mph | 1mph | 4mph | 8mph | 10mph | 6mph |
| Dew | 45° | 47° | 45° | 46° | 46° | 44° | 43° | 50° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2013
Aug 24, 2013
Partly cloudy throughout the day with rain.
Low: 55°, High: 65°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 58° | 58° | 59° | 62° | 64° | 65° | 65° | 65° |
| Feel | 58° | 58° | 59° | 62° | 64° | 65° | 65° | 65° |
| Rain | - | - | - | - | - | - | - | light |
| Wind | 1mph | 1mph | 1mph | 3mph | 1mph | 4mph | 6mph | 8mph |
| Dew | 43° | 45° | 45° | 45° | 44° | 43° | 45° | 44° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2012
Aug 25, 2012
Clear conditions throughout the day.
Low: 47°, High: 73°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 48° | 52° | 57° | 62° | 68° | 70° | 72° | 73° |
| Feel | 46° | 52° | 57° | 62° | 68° | 70° | 72° | 73° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 4mph | 1mph | 0mph | 2mph | 3mph | 7mph | 9mph |
| Dew | 43° | 43° | 44° | 43° | 40° | 37° | 37° | 38° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2011
Aug 27, 2011
Partly cloudy throughout the day with early morning rain.
Low: 54°, High: 76°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 54° | 56° | 61° | 66° | 72° | 74° | 76° | 75° |
| Feel | 54° | 56° | 61° | 66° | 72° | 74° | 76° | 75° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 6mph | 4mph | 2mph | 1mph | 5mph | 6mph | 8mph | 9mph |
| Dew | 49° | 48° | 50° | 47° | 46° | 44° | 42° | 44° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2010
Aug 28, 2010
Partly cloudy throughout the day.
Low: 54°, High: 66°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 54° | 56° | 63° | 62° | 63° | 63° | 64° | 64° |
| Feel | 54° | 56° | 63° | 62° | 63° | 63° | 64° | 64° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 1mph | 4mph | 1mph | 1mph | 1mph | 1mph | 8mph |
| Dew | 40° | 41° | 43° | 43° | 40° | 41° | 43° | 43° |
| RunScore | | | | | | | | |
Silverton Alpine Marathon 2009
Aug 29, 2009
Clear conditions throughout the day.
Low: 52°, High: 86°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 53° | 58° | 65° | 71° | 75° | 80° | 84° | 86° |
| Feel | 53° | 58° | 65° | 71° | 75° | 79° | 81° | 83° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 6mph | 2mph | 2mph | 3mph | 3mph | 3mph | 7mph | 4mph |
| Dew | 36° | 37° | 36° | 35° | 37° | 36° | 34° | 30° |
| RunScore | | | | | | | | |