Hikers and backpackers often visit Cascade Pass in the southwestern section of the southern unit of the park, which was used as a travel route by Native Americans. The pass can be reached by a hiking trail accessed from a parking lot at the end of a gravel road that starts at Marblemount. There are nearly of hiking trails in the park. Hikers can also access two National Scenic Trails including of the Pacific Crest Trail, located in the southern unit of the park, and of the Pacific Northwest Trail that passes through the northern unit. The north and south Picket Ranges, Mount Triumph, Eldorado Peak and Boston Peak regions are popular backcountry camping zones.