Silverton Alpine Marathon
Silverton Alpine Marathon race day weather
Cool start, warming finish
Runners will face a cool start at 51°F, warming to 70°F by the finish. A light tailwind will aid early miles, but headwinds will challenge runners from miles 13 to 21, particularly during the climbs. With humidity at 46%, pacing should be conservative to manage the heat as temperatures rise, especially after mile 16.
This course climbs 3,537 ft to its high point and back, so we look at it at 2 points, not just the start line. In a typical year, at 9:00/mi, you start at 51° and finish around 10:55 AM in 70°.
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Silverton Alpine Marathon route and elevation
The Silverton Alpine Marathon course has about 3,911 ft (1,192 m) of climbing. It is hillier than 99% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 16, with 602 ft (183 m) of climbing and an 8.4% average grade.
Biggest climbs
- Miles 0.5 to 6: climbs about 450 ft (137 m).
- Miles 6.9 to 15.8: climbs about 3,125 ft (952 m).
- Miles 16.2 to 16.7: climbs about 160 ft (49 m).
What the hills cost
- 3:30 on a flat course is about 3:54 here (24 minutes slower).
- 4:00 on a flat course is about 4:28 here (28 minutes slower).
- 4:30 on a flat course is about 5:01 here (31 minutes slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 3:30, 4:00 or 4:30 finish
| Mile | Climb | Descent | 3:30 | 4:00 | 4:30 |
|---|---|---|---|---|---|
| 1 | 51 ft | 24 ft | 7:20 | 8:22 | 9:25 |
| 2 | 97 ft | 10 ft | 7:48 | 8:56 | 10:02 |
| 3 | 103 ft | 5 ft | 7:53 | 9:01 | 10:09 |
| 4 | 104 ft | 2 ft | 7:56 | 9:03 | 10:11 |
| 5 | 44 ft | 14 ft | 7:22 | 8:25 | 9:29 |
| 6 | 94 ft | 15 ft | 7:45 | 8:52 | 9:58 |
| 7 | 85 ft | 53 ft | 7:23 | 8:26 | 9:29 |
| 8 | 133 ft | 0 ft | 8:10 | 9:20 | 10:30 |
| 9 | 339 ft | 0 ft | 9:59 | 11:25 | 12:50 |
| 10 | 324 ft | 0 ft | 9:50 | 11:15 | 12:40 |
| 11 | 303 ft | 0 ft | 9:39 | 11:01 | 12:24 |
| 12 | 270 ft | 5 ft | 9:19 | 10:38 | 11:58 |
| 13 | 392 ft | 0 ft | 10:29 | 11:59 | 13:29 |
| 14 | 407 ft | 4 ft | 10:35 | 12:07 | 13:37 |
| 15 | 354 ft | 2 ft | 10:06 | 11:32 | 12:59 |
| 16 | 602 ft | 156 ft | 11:01 | 12:36 | 14:10 |
| 17 | 160 ft | 350 ft | 6:36 | 7:31 | 8:28 |
| 18 | 1 ft | 793 ft | 6:42 | 7:40 | 8:38 |
| 19 | 0 ft | 708 ft | 6:31 | 7:28 | 8:23 |
| 20 | 0 ft | 604 ft | 6:22 | 7:16 | 8:11 |
| 21 | 0 ft | 170 ft | 6:39 | 7:35 | 8:32 |
| 22 | 6 ft | 165 ft | 6:39 | 7:37 | 8:34 |
| 23 | 4 ft | 140 ft | 6:43 | 7:41 | 8:38 |
| 24 | 3 ft | 235 ft | 6:31 | 7:26 | 8:22 |
| 25 | 35 ft | 152 ft | 6:46 | 7:44 | 8:42 |
| 26 | 25 ft | 252 ft | 6:31 | 7:27 | 8:23 |
| Last 0.2 | 0 ft | 74 ft | 1:25 | 1:37 | 1:49 |
Explore the Silverton Alpine Marathon course with the weather and your pace along the route, or compare it with other races.
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About the Silverton Alpine Marathon
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
