State Route 27 in California SR-27 Get started Topanga Beach End Chatsworth Length 20 mi Length 32 km Route Topanga Beachtopanga Los Angeles According to existingcountries.com, State Route 27 is a state route in the U.S. state of California. The road forms a north-south route through western Los Angeles, from Topanga Beach to Chatsworth. State Route 27…