Lathrop is a city in San Joaquin County in California's San Joaquin Valley. Get in Get around See Do Buy Eat Drink Sleep Holiday Inn Express, 15688 S. Harlan Rd, 37.8208°, -121.2915°, +1 209-373-2700. 2016-08-14 Hampton Inn & Suites, 103 E. Louise Ave, +1 209 982-5070. Go next Stockton - take Interstate 5 North. Sacramento- take Interstate 5 north past Stockton. Bay Area- take Interstate 205 & Interstate 580. Los Angeles- take Interstate 5 south.