State Route 79 (SR 79) is a state highway in the U.S. state of California. The route begins at Interstate 8 (I-8) in San Diego County, continuing north through the town of Cuyamaca into Julian. After passing through Warner Springs, the route crosses into Riverside County, serving the cities of Temecula and Murrieta. SR 79 ends at I-10 in Beaumont.