Due to its location at the "crossroads" of the Central Valley and a relatively extensive highway system, Stockton is easily accessible from virtually anywhere in California. Interstate 5 and State Route 99, California's major north-south thoroughfares, pass through the city limits. The east-west highway State Route 4 also passes through the city, providing access to the San Francisco Bay Area as well as the Sierra Nevada and its foothills. Stockton is the western terminus of State Route 26 and State Route 88, which extends to the Nevada border. In addition, Stockton is within an hour of Interstate 80, Interstate 205 and Interstate 580.