CR N9 (Kanan Road/Kanan Dume Road) Mulholland Highway is a scenic road in Los Angeles County, California, that runs approximately 50 miles through the western Santa Monica Mountains from near US Route 101 (Ventura Freeway) in Calabasas to Highway 1 (Pacific Coast Highway) near Malibu at Leo Carrillo State Park and the Pacific Ocean coast – at the border of Los Angeles and Ventura Counties.

Mulholland zigzags through the Santa Monica Mountains – one of the Southern California Transverse Ranges – from Oxnard all the way to Hollywood.

Running east–west along the spine of the Santa Monicas, Mulholland Highway makes its way through the mountains without benefit of tunnels.

There are several automobile wrecks and fire-burnt structures that litter the bottoms of the canyons through which Mulholland Highway passes [citation needed].

In the early 1970s, five thousand local activists successfully prevented the cement paving of most of the Mulholland Drive stretch.