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Silverthorne, CO: Ptarmigan Peak

This 11.8-mile dayhike links quiet forests and wildflower-filled meadows to a broad mountaintop overlooking Lake Dillon.

Trip Tools

The Ptarmigan Peak Trail starts above Silverthorne and climbs steadily along grassy hills dotted with intermittent aspen groves. Unobstructed views of Lake Dillon and the Tenmile Range stretch out to the south and southwest until the trail enters the forest at mile 0.6.

From here, the path winds past trickling brooks, vibrant wildflower displays, and fragrant pines—look west for views of the Gore Range between gaps in the trees. After four miles, the trail passes above treeline and ascends an expansive ridge with bird’s-eye views across Summit County.

Leave the trail at mile 5.7, and follow a string of cairns along a 300-yard non-technical approach to Ptarmigan’s broad summit. Savor the far-reaching vistas before retracing your steps back to the trailhead.

-Mapped by Kim Phillips

To Trailhead

From Blue River Pkwy./CO 9 N and Rainbow Dr. in Silverthorne, head north on Rainbow Dr. In 250 feet, turn right onto Tanglewood Ln. In 0.2 mile, turn right onto Ptarmigan Trail. Go 0.9 mile to a small parking area on right side of road.

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