This epic hike climbs Mt Whitney, the highest summit in the US outside Alaska. The rough, well-marked trail climbs past conifer trees, green valleys, lakes, granite canyons, lots of switchbacks and a long stony traverse. The summit offers 360 degree views over the high Sierra and Owens Valley. Strong hikers may do this as a 12-16 hour day hike but many are better off camping mid-way. Be prepared for high elevation: bring extra water, wear lots of sun protection and know the signs of altitude sickness.
permissionmay - octany vehicle
Permits are required year-round and a quota limits the number of hikers between May 1st and November 1st, with spaces allocated by lottery. The route is very popular so it's best to apply months in advance.
For more information check with with the US Forest Service for Inyo National Forest: https://www.fs.usda.gov/inyo/