Greyrock Mountain Trail, hiking trail in Roosevelt National Forest, Colorado, United States

Greyrock Mountain Trail is a hiking trail in Roosevelt National Forest west of Laporte, Colorado. It was built by the Civilian Conservation Corps in the 1930s and designated a National Recreation Trail in 1979.

The path was built in the 1930s by workers of the Civilian Conservation Corps, a New Deal program that created jobs while developing forest lands. It later gained recognition as a National Recreation Trail, making it part of a network of important hiking routes across the country.

The trail's name comes from Greyrock Mountain, the granite outcrop it climbs to. Since 1979 it has held National Recreation Trail status, a designation that recognises routes of national value for outdoor recreation. Hikers today follow the same route laid out by the Civilian Conservation Corps in the 1930s.

The trailhead lies west of Laporte in Roosevelt National Forest, reached by a forest road off Colorado Highway 14 along the Cache la Poudre River. The route climbs roughly 2,000 feet over about 3 miles, with steep, rocky stretches near the top. Carry all your water, since none is available along the way, and descend if thunderstorms build.

The trail was designated a National Recreation Trail in 1979, a status that recognizes it within a national network of hiking routes. The path itself was built in the 1930s by Civilian Conservation Corps crews, so the route visitors follow today follows work laid out by New Deal laborers.