Williams Fork Mountains

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Williams Fork Mountains

A smaller range located in Colorado's massive Front Mountain Range, the Williams Fork Mountains are a group located between the Blue River and the Williams Fork of the Colorado River of Summit County. Read More

  • While the Williams Fork Mountains are climbable year round, summer and fall months are recommended.
  • Camping is prohibited on the Ptarmigan Peak Trail; yet, small campsites are available on the South Fork and Ute Peak Trails.


The Williams Fork Mountains within Colorado’s Front Range encompass the group of mountains that cluster between the Blue River and the Williams Fork of the Colorado River in Summit County, Colo.


Located near the town of Silverthorne, Colo. the Williams Fork Mountains run along Highway 9, ensuring easy access and close amenities for travelers.

Dillon Ranger District
680 River Parkway
Silverthorne, CO 80498


The Williams Fork Mountains are open year-round. However, certain activities are dependent upon the season.


Activities are similar year-round as they predominantly consist of mountaineering involving hiking, backpacking and wildlife viewing during the summer months and ice climbing and other forms of mountaineering during the winter months.

The Ptarmigan Peak Trail Route on Ptarmigan Park is rated as a Class 1 at 10.6 miles round trip. Visitors not only gain 3,120 feet in elevation but also views of Buffalo Mountain, Red Peak and the Willow Peak Massif. To the south of the peak, visitors can view Lake Dillon’s abundance of sailboats during the summer season.

Additional Info

Coon Hill is the highest point of elevation in the Williams Fork Mountains at 12,757 ft.; yet, access to the peak has since been closed.

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