Beginning at Forest Road 5897, the Twins Trail begins a gradual ascent toward the Pacific Crest National Scenic Trail #2000, which is reached in less than 2 miles. After crossing the Pacific Crest National Scenic Trail, it begins to climb more steeply and heads east around the south side of Twins Peak. This trail takes the hiker through a dry mountain hemlock and lodgepole pine forest with areas of exposed rock and boulders.
After a scramble through pumice soils, the top of Twins Peak is reached for a spectacular view of the Waldo Lake area and including the Three Sisters and Diamond Peak. The trail continues on northward toward Found Lake and Gerdine Butte, but is sometimes difficult to locate. Upon reaching the forest boundary the trail number changes to #19, a Deschutes National Forest designation.
Trail description from the US Forest Service website.