About this permit
Mount Whitney's summit is inside Sequoia National Park, but the overnight permit for the standard route is not a park permit. NPS routes hikers by starting point: begin at Whitney Portal on the east side and you apply to Inyo National Forest, cross the Sierra from the west and you apply to Sequoia & Kings Canyon.
The Inyo overnight permit is capped at 60 people per entry day during quota season, May 1 to November 1. Set a cancellation alert for April 22 at 7 am Pacific, when unclaimed dates go on general sale, and for the cancellations after that. Every date first goes through the Mt Whitney Lottery: applications February 1 to March 1, results March 15, claim by April 21.
Camping a night on the way up is Inyo's own advice rather than a workaround. The forest names Lone Pine Lake, Outpost Camp, Consultation Lake and Trail Camp as the usual choices for backpackers who want more time to adapt to the elevation.
The route
The route is the same 10.7-mile trail NPS describes from Whitney Portal at 8,360 feet to the summit at 14,505 feet, gaining over 6,200 feet. Inyo names the camps that break it up: Lone Pine Lake at 9,900 feet, Outpost Camp at 10,400, Consultation Lake at 11,600 and Trail Camp at 12,000.
Above Trail Camp come the switchbacks (NPS counts 100 of them) to Trail Crest at 13,600 feet, which is where the trail crosses into Sequoia National Park about two miles from the top. From there the summit spur runs 2.4 miles along the west side of the crest, starting a hundred yards below Trail Crest. There is no reliable water between Guitar Lake on the west and Trail Camp on the east.
Park rules take over at the crest and they are stricter than the forest's: no camping in the Mt. Whitney shelter, a two-night limit in the Crabtree and Whitney Creek area and at Guitar Lake, no camping at Timberline Lake, and a maximum party size of 8 rather than 15 in the off-trail areas of Mt. Whitney and Whitney and Crabtree Creeks.
Why it matters
The summit belongs to Sequoia National Park, but the permit almost never does. NPS is clear that hikers starting at Whitney Portal apply to Inyo National Forest, and only people crossing the Sierra from the west apply to Sequoia & Kings Canyon. So the overnight permit most people actually need is the Inyo Mt Whitney Trail overnight permit, capped at 60 people per entry day. The February lottery hands out the first round, and unclaimed and cancelled dates go back on Recreation.gov after that.
The feeling
The difference a night makes is not romantic, it is physiological. You get to Trail Camp at 12,000 feet in the afternoon with the switchbacks stacked above you, eat, sleep badly, and wake up already at altitude instead of climbing 4,000 feet into it before breakfast. The people passing you at 3 am left the car at midnight and have another six hours in them before they see the sun.
