Mills Lake, Black Lake, Frozen Lake Trail is a 11.4 mile moderately trafficked out and back trail located near Estes Park, CO that features a lake and is rated as moderate. The trail offers a number of activity options and is accessible from May until November. Horses are also able to use this trail.
Take Hwy. 36 out of Estes Park to RMNP entrance, then go to Bear Lake Rd. and follow it to Glacier Gorge TH.