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Sourdough (see map for Boulder)

Sourdough South National Protection Area
Sourdough North National Protection Area
Agency Status: Roadless area
Counties: Boulder
Nearest City of Town: Boulder
Location: South: around eastern side of Niwot Mountain and Ridge; North: between Brainard Lake area and Beaver Reservoir
The Sourdough South Protection Area includes the extremely popular Sourdough Trail, as well as part of Niwot Mountain and the Niwot Ridge Trail.
The Sourdough North Protection Area includes the Sourdough Trail, as well as part of the Wapiti and South St. Vrain Trails.