The Lost Lake Trail (aka Dunraven-Glade) follows the North Fork Of The Big Thompson River on the way to the Lost Falls (7.5 mi) and Lost Lake (10 mi). There is a horse camp 8.4 miles in on the trail. It is called Lost Meadow Camp.
To reach the Dunraven Trailhead from Glen Haven, northeast of Estes Park, go east on CR 43 for 2 miles. Turn left on Dunraven Glade Rd. Follow for 2.75 miles to the trailhead.
Overall, Lost Lake Trail is the 7th most popular horseback riding trail of all 68 horseback riding in Colorado.