National and State Register

Lost Lake Trail

Larimer County

Lost Lake gained popularity with tourists in the 1910s.  Guests at Sprague’s Resort enjoyed guided horseback trips up to the lake.  Hotels, railroads, and other tourist industry businesses acknowledged and promoted the charms of the Lost Lake area.  Initial construction of the trail began in 1911, several years before the formal establishment of Rocky Mountain National Park. 

A black and white photo of the trail next to some trees below on the left.

Lost Lake Trail

The trail crosses through Roosevelt National Forest before reaching the park boundary.  Within the park, the 4.5-mile trail design reflects National Park Service (NPS) Naturalistic Design of the 1920s through the 1940s.  The property is associated with the Rocky Mountain National Park and the Historic Park Landscapes in National and State Parks Resources Multiple Property Submissions