For longer trips outside the area the most recommended is Hwy 1 North through Morro bay, Pismo beach and the Big Sur to Monterey/Carmel. Further North to San Francisco and Napa county through the Redwood forest is also beautiful along the coast. There are countless great inland roads as well. A good reference for trip planning is www.Pashnit.com as he has highlighted every motorcycle road in the entire State!
We are fortunate to be surrounded by fantastic motorcycle oriented roads. Local favorites are the Malibu canyons, Angeles Crest hwy, Ortega hwy, Mt Palomar and Rim of the World hwy including lakes Arrowhead and Big Bear, Glendora Ridge and Azusa hwy. Check out www.RidesaroundLA.com and www.SundayMorningRides.com