Muholland drive from the 101 fwy, in the San Fernando valley, past the Rock Store (world famous for the Sunday sport bike meet), to Westlake blvd in Westlake is awesome too. Then turnaround and take Westlake Blvd back the way you came to PCH in Malibu (this section is very narrow and dangerous, but lots of fun if you like tight, hard corners). Enjoy the Ride!