The John Muir Trail (JMT) is a long-distance trail in the Sierra Nevada mountain range of California, running 211 miles (340 km) between the northern terminus at Happy Isles in Yosemite Valley and the southern terminus located on the summit of Mount Whitney. For almost all of its length, the trail is in the High Sierra backcountry and wilderness areas. For about 160 miles (260 km), the trail, named for naturalist John Muir, follows the same footpath as the longer Pacific Crest Trail. It also passes through Kings Canyon National Park and Sequoia National Park.
The official length of the JMT, as stated by the United States Geological Survey (USGS), is 211 miles (340 km). From its northern terminus in Yosemite Valley, the trail runs northeast, passing south of Half Dome and then on to Tuolumne Meadows. From Tuolumne Meadows the trail turns south, running parallel to the main range of the Sierra Nevada, through Yosemite National Park, Inyo and Sierra national forests (including the John Muir Wilderness and Ansel Adams Wilderness), passing through Devils Postpile National Monument, Kings Canyon National Park, and ending on Mount Whitney in Sequoia National Park. From the southern terminus of the JMT at the summit of Mount Whitney, an additional 11-mile (18 km) hike on the Mount Whitney Trail is required to reach the nearest trailhead at Whitney Portal, thus making an end-to-end traverse of the trail effectively 220 miles (350 km).