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Colorado State Road 149 (US160/South Fork to US50/Gunnison over Slumgullion Pass) (including the Silver Thread Byway)

Discover the places, landscapes and connections that make a journey memorable.
Scenic header: The Teton Range in the fall. · NPS Photo/Tobiason · Photo credits

Location

Description

Heading north, from the summit of the Slumgullion Pass (just south of Lake City) the road descends almost continuously, and in many places fairly steeply, all the way to its terminus at US50. This must surely be one of the longest continuous descents/ascents of any road in the world.

The 75 mile long section of this road between South Fork and Lake City is known as the Silver Thread Byway.

The entire length of this road is highly scenic. The southern section passes through typical Colorado ranching country, while the northernmost part is through more arid country.

Although there is a road from Lake City to Silverton and US550 just north of Ouray, this is a unpaved road only suitable for four-wheel-drive vehicles.

Black Canyon of The Gunnison National Monument (just east of Montrose, which is some way west of Gunnison)

Scenic Roads

KEEP EXPLORING

Places & useful connections

Before you set out

Confirm current access, opening arrangements, reservations and the suitability of your planned roads and walks. Photographs may show earlier conditions.