In-N-Out Burger at 108 E Easton St sits in Rialto, the city where the chain was founded in 1948 and where its corporate headquarters still operates today. This location carries extra weight for burger pilgrims: it’s practically home turf for a chain that built a cult following on a four-item menu and an unwritten “secret menu” that regulars treat as gospel.
Visitors order the Double-Double—two beef patties, two slices of cheese, lettuce, tomato, spread, and onion on a toasted bun—alongside hand-cut fries, which can be ordered Animal Style with mustard-cooked patties, grilled onions, and extra spread. Shakes are made from real ice cream, not a mix, and the chain still refuses to install microwaves or freezers for pre-made patties. The dining room runs clean, bright, and efficient, with red-and-white signage and a drive-thru lane that often wraps around the building during peak hours. Staff move fast, and the open kitchen lets customers watch burgers assembled to order rather than pulled from a holding tray.
Visitor Highlights & Practical Info
Lunch rush hits hard between 11:30 a.m. and 1:30 p.m., and dinner slows only slightly after 8 p.m. Arrive before 11 a.m. or after 2 p.m. for shorter lines. The drive-thru moves quickly despite its length, so don’t assume walking in saves time. Rialto sits along the I-10 corridor, making this spot a natural stop for drivers heading toward Palm Springs or Las Vegas. Parking fills during peak hours, so expect a short wait for a spot near the entrance.
