Site Navigation Baja California California Colorado Idaho Hawaii Nevada New Mexico Oregon Utah Washington Wyoming     California 1 South - San Luis Obispo County Index Northbound Orange County Los Angeles County Ventura County Santa Barbara County San Luis Obispo County Monterey County Santa Cruz County San Mateo County San Francisco County Marin County Sonoma County Mendocino County Southbound Mendocino County Sonoma County Marin County San Francisco County San Mateo County Santa Cruz County Monterey County San Luis Obispo County Santa Barbara County Ventura County Los Angeles County Orange County Business Routes - list of all California 1 business routes California 1/Cabrillo Highway south Southbound California 1 approaches its junction with Business California 1, which leads into Cambria (just south of San Simeon/Hearst Castle). Photo taken 08/18/03. Page Updated June 29, 2009.