Mount Whitney Trail
Mount Whitney Trail is the classic route up Mount Whitney from Whitney Portal in Inyo National Forest to the summit area in Sequoia National Park. It’s a long, high-elevation hike with substantial altitude gain and a long, tiring climb for most parties.
Typical day plans are run as a very long day or as an overnight backpack. The climb is commonly described as roughly a 22-mile round trip with about 6,100+ feet of elevation gain, and fast hikers often still plan a full summit push that runs deep into the day.
The route passes key waypoints on the approach to the high country, including Lone Pine Lake, Outpost Camp, and Trail Camp, with the familiar “97 switchbacks” climbing toward the summit ridge. The Sierra crest section brings you near the ridgeline and onward to the summit plateau.
Camping is built around two designated camps on the classic trail: Outpost Camp and Trail Camp. Most overnight backpackers use this structure rather than informal camping, since level ground close to the trail is limited near the higher elevations.
Access is permit-controlled. A wilderness permit is required year-round for the Mt. Whitney Zone, with quotas typically in effect from May 1 through November 1; permits are issued through an early-season lottery system, and quotas limit both day use and overnight use.
The trail is non-technical when it’s free of snow and ice, but it becomes a serious winter travel route when snow and ice linger. Early/shoulder-season attempts can require appropriate traction and, in colder conditions, winter mountaineering skills and equipment for safe travel.
High altitude is the primary physiological hazard, and weather can change quickly with frequent summer thunderstorms and lightning risk. The long exposure at elevation makes planning turnaround time essential, since the descent is still steep and tiring even for fit hikers.