Resupplying is a big part of any long-distance hiking. It is a good idea to ship yourself care packages to certain resupply stops along the hike. Be noted that it is illegal to cache food anywhere along the trail so as not to disturb wildlife and attract bears. Here are some places to stop and resupply.
Tuolumne Meadows: The first well-stocked resupply store. Only open seasonally, and will hold packages.
Red’s Meadow: A small amount of food, has logging and hot showers. Will hold packages for a small fee and has a bus line to take you into Mammoth Lakes, a small town.
Vermillion Valley Resort: Has plenty of trail food and restocked supplies for sale. Also has logging, showers, laundry, and hot food. The first meal and drink are free to thru-hikers. Holds packages for a small fee.
Muir Trail Ranch: Located less than a mile away from the trail itself, this is a smaller facility with logging, hot food, a store, and a gift shop. Only open seasonally. Will hold packages for a fee.