California State Route 4, also known as SR 4, is a state highway located in northern California. It stretches approximately 140 miles, connecting the cities of Stockton and Eureka. The route traverses diverse landscapes, including urban areas, farmland, and mountainous regions. SR 4 serves as a vital transportation corridor, facilitating travel and commerce in the region. It passes through several notable locations, such as Antioch and Angels Camp, and provides access to recreational areas like Lake Tahoe and the Sierra Nevada mountains. The highway is an essential link for both residents and visitors.