California State Route 37 is a state highway located in northern California. It runs approximately 21 miles, connecting Novato in Marin County to Suisun City in Solano County. The route primarily serves as a vital link for commuters and travelers, providing access to the San Francisco Bay Area. The highway traverses a mix of urban and rural landscapes, including marshlands and scenic views of the Bay. It intersects with several major roads, enhancing connectivity to nearby cities and attractions. California State Route 37 is also known for its importance in regional transportation and emergency evacuation routes.