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2 Iconic Mt. Sopris Trail Runs
Sunday, May 18th, 2025

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The Trail Running Film Festival is thrilled to announce the launch of its highly anticipated 2025 Tour, presented by Brooks, our title sponsor. Featuring six incredible films that celebrate the spirit, adventure, and community of trail running.

May 16, 2025 from 6-8 PM
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Join us Sunday, May 18th in Carbondale, CO for a 10-Miler and a 25k!

Starting 8am at Flying Dog Ranch
Finishing Party at Rock Bottom Ranch
$80 Race Fee

The Mt Sopris Run-Off takes place in Carbondale, CO and offers two distances – 10-Miles and 25k. Historically this race has been a part of the Town of Carbondale’s Mountain Fair Weekend in late July. In 2025, the race will take place on Sunday, May 18th at 8:00am as a part of a growing trail festival weekend in the Roaring Fork Valley. The race will feature two distances – 10-miles and 25k – both utilizing the iconic “Up & Over” single track trail in a point-to-point race taking runners from the start at Flying Dog Ranch on Prince Creek Road up and over and ending at Rock Bottom Ranch in Basalt, CO.

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The 10-Miler

  • From the start line at Flying Dog Ranch runners will run up Prince Creek Road (pavement and dirt) for 1.75 miles before diverting onto Prince Creek Trail (single track) for 0.35 miles then turning left Christmas Tree (single track) for 0.50 miles.
  • At the top of Christmas Tree, runners will have reached 2.60 miles and steadily climbed 725’.
  • From the top of Christmas Tree, runners will stay straight as they begin a northward traverse on North Porcupine (single track) for 2.7 miles before the trail turns into Outie (single track).
  • After a gentle 1.0 mile climb up Outie runners will take a sharp left hand turn onto Buckhorn (single track) at mile 6.30.
  • From the start of Buckhorn, runners will enjoy a flowy and smooth cruise down through sage fields losing 500’ of elevation over the next 2.4 miles.
  • At the junction of Buckhorn and Buckhorn Traverse, the 10-miler runners will stay straight on Buckhorn continuing the descend another 500’ via multiple buttery switchbacks for 1.3 miles until intersecting with the Rio Grande Trail (pavement).
  • To get to the finish, runners will take a right on the Rio Grande Trail before crossing the dirt road and entering Rock Bottom Ranch for a sprint to the finish line.
  • RACERS NEED TO BE TO THE 3RD AID STATION BY 11 A.M.
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The 25k

  • From the start line at Flying Dog Ranch runners will run up Prince Creek Road (pavement and dirt) for 1.75 miles before diverting onto Prince Creek Trail (single track) for 0.35 miles then turning left Christmas Tree (single track) for 0.50 miles.
  • At the top of Christmas Tree, runners will have reached 2.60 miles and steadily climbed 725’.
  • From the top of Christmas Tree, runners will stay straight as they begin a northward traverse on North Porcupine (single track) for 2.7 miles before the trail turns into Outie (single track).
  • After a gentle 1.0 mile climb up Outie runners will take a sharp left hand turn onto Buckhorn (single track) at mile 6.30.
  • From the start of Buckhorn, runners will enjoy a flowy and smooth cruise down through sage fields losing 500’ of elevation over the next 2.4 miles.
  • At the junction of Buckhorn and Buckhorn Traverse, the 25k runners will turn right onto Buckhorn Traverse (single track) for 4.0 miles ending with 450’ climb over the last 2.0 miles to get to the Glassier Trail (single track).
  • The finishing stretch will be fast with a 2.3 mile descent down the buttery switchbacks of Glassier losing 800’ of elevation followed by a slightly downhill 1.5 mile section on the Rio Grande Trail (pavement) before crossing the dirt road and entering Rock Bottom Ranch for a sprint to the finish line.
  • RACERS NEED TO BE TO THE 3RD AID STATION BY 11 A.M.
REGISTER NOW

LOCAL WEATHER

Spring weather in the Colorado mountains can change quickly! Participants should be prepared for all weather conditions.

 

“All or part of this operation is conducted on Public Lands under special permit from the U.S. Bureau of Land Management”

Carbondale, CO
55°
Partly Cloudy
7:14 am7:19 pm MDT
Feels like: 54°F
Wind: 10mph SW
Humidity: 27%
Pressure: 29.86"Hg
UV index: 5
2 pm3 pm4 pm5 pm6 pm
57°F
57°F
54°F
52°F
50°F
TueWedThuFriSat
43°F / 23°F
37°F / 18°F
45°F / 25°F
46°F / 28°F
48°F / 27°F
Carbondale, CO weather forecast ▸

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901 Hwy 133  |  Carbondale, CO