Cimarron Ridge[2] is a ridge in the San Juan Mountains in southwestern Colorado.

The ridge runs north-south and occupies parts of Gunnison, Montrose, Ouray, and Hinsdale counties.

Peaks along the ridge include Courthouse Mountain, elevation 12,172 ft (3,710 m),[1] and Chimney Rock, elevation 10,958 ft (3,340 m).

[3] Chimney Rock is known for appearing in the 1969 western motion picture True Grit and is considered among the most difficult peaks to climb in Colorado.

[4] The ridge is made up of green and gray tuff breccia and is the "erosional remains of a larger volcanic pile that surrounded several volcanoes.