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| Four-Mile Trail | |
|---|---|
| Name | Four-Mile Trail |
| Location | Yosemite Valley, Mariposa County, California, United States |
| Length | 4.8 miles (7.7 km) one way |
| Elevation gain | ~3,200 ft (975 m) |
| Trailheads | Yosemite Valley (near Yosemite Valley, Yosemite National Park) — Glacier Point |
| Use | Hiking, backpacking |
| Difficulty | Strenuous |
Four-Mile Trail The Four-Mile Trail is a strenuous hiking route in Yosemite National Park ascending from Yosemite Valley to Glacier Point, offering panoramic views of El Capitan, Half Dome, Yosemite Falls, Vernal Fall, and Nevada Fall. Established during the late 19th century amid expanding national park infrastructure, the trail is frequented by visitors from San Francisco, Los Angeles, Sacramento, and international gateways such as San José International Airport. Managed by the National Park Service, the route intersects with other historic paths and modern facilities administered by the U.S. Department of the Interior.
The trail covers roughly 4.8 miles one way with about 3,200 feet of elevation gain, linking Yosemite Valley floor landmarks near Yosemite Village, Yosemite Lodge, and Sentinel Rock to Glacier Point overlooking features like Half Dome and the Merced River. Its designation falls under the jurisdiction of Yosemite National Park and the National Park Service trail maintenance program, which also oversees trails such as the Mist Trail, John Muir Trail, and Four Guard Stations. Seasonal closures relate to weather patterns influenced by the Pacific Sierra Nevada climate and regional management plans developed by the U.S. Fish and Wildlife Service and park superintendents.
Beginning near the Yosemite Valley floor close to the Yosemite Valley Chapel and Curry Village, the trail climbs past iconic viewpoints including Sentinel Dome approaches, switchbacks, and granite stairways hewn in the era of John Muir advocacy for preservation. Hikers encounter geological features tied to the Sierra Nevada pluton and glacial sculpting associated with the Pleistocene epoch, with sightlines to El Capitan, Clouds Rest, and the Tuolumne Meadows plateau. The summit at Glacier Point provides vistas of Yosemite Falls, Bridalveil Fall, and distant ranges such as the High Sierra and Mount Lyell, integrating interpretive signage installed by the National Park Service and historic shelters dating to early park infrastructure projects.
Constructed in the late 1800s and improved through early 20th-century programs like the Civilian Conservation Corps and park cooperative efforts, the trail’s alignment reflects the era of Conservation Movement proponents including John Muir and administrative figures tied to the establishment of Yosemite National Park. Early tourism from San Francisco and the Central Pacific Railroad era encouraged trail development concurrent with roads to Glacier Point and hotels such as the Wawona Hotel. Later enhancements were influenced by federal programs under presidents associated with park expansion and infrastructure funding, and by landscape architects trained in principles advocated by the Society of American Foresters.
Vegetation along the ascent transitions from mixed conifer and oakhabitat communities on the valley floor to montane conifer stands dominated by Ponderosa pine, Douglas fir, White fir, and scattered Giant sequoia groves at varying elevations. Wildlife includes sightings of Black bear, Mule deer, Coyotes, and avifauna such as Steller's jay, Peregrine falcon, and American dipper near streams feeding Merced River. Botanical diversity includes understory species protected under park policies influenced by the Endangered Species Act and monitored in cooperation with research institutions like University of California, Berkeley and Stanford University.
Visitors must follow National Park Service regulations concerning backcountry permits, food storage (bear canisters where required), and seasonal restrictions enforced by park rangers and law enforcement specialists within the U.S. Department of the Interior. Trail hazards include steep granite sections, sudden weather changes tied to Sierra Nevada storms, and winter ice requiring traction devices; search-and-rescue operations are coordinated with regional units including Cal Fire and county sheriff offices. Leave No Trace principles promoted by organizations such as the Leave No Trace Center for Outdoor Ethics are emphasized alongside permit systems and visitor education programs.
Access points include trailheads near Yosemite Village, reachable via the park road network from Highway 41 (Wawona Road), Highway 140 (El Portal), and Highway 120 (Big Oak Flat Road). Glacier Point Road seasonal openings connect to viewpoints served by park shuttles and private operators from gateway communities like Mariposa, Oakhurst, and El Portal. Transportation planning within the park integrates shuttle services, parking management, and visitor flow strategies coordinated with entities including the Federal Highway Administration and regional transit authorities.
The trail is embedded in cultural narratives linked to Yosemite Valley exploration by figures such as John Muir and early photographers like Ansel Adams, whose images of El Capitan and Yosemite Falls shaped American conservation discourse. It serves hikers, naturalists, photographers, climbers, and educators participating in programs by institutions such as the Yosemite Conservancy and interpretive events sponsored by the National Park Service. Annual visitation patterns reflect tourism trends from metropolitan regions including San Francisco Bay Area, Los Angeles County, and international markets serviced by airports such as San Francisco International Airport and Los Angeles International Airport.