The Pacific Crest Trail is one of eight National Scenic Trails in the United States. The 2,600 mile route extends from Canada to Mexico. From the north, the Pacific Crest Trail enters the Eldorado National Forest in Desolation Wilderness. It continues south, jogging back and forth between the Lake Tahoe Basin Management Unit (new window) and the Humboldt-Toiyabe National Forest (new window) and the Eldorado National Forests. Designated access points are located at Norden on Interstate 80, Echo Lake on Highway 50, Carson Pass on Highway 88 and Ebbetts Pass on Highway 4. The entire Pacific Crest Trail is closed to all types of vehicles, including bicycles. Wilderness permits are required while traveling through Desolation Wilderness and for overnight stays in Mokelumne Wilderness .