Maybe in Santa Barbara County, if your legs are built up enough by then, you could try the inland route. From the free campsite in the small town of Guadalupe, head E on Hwy 166 through Santa Maria to the hamlets of Garey and Sisquoc (an alternate route is mostly on the Santa Maria River Levee trail which passes just N of Santa Maria to Bull Canyon Road), then on Foxen Canyon Rd to Los Olivos. From there, either a direct shot on 154 to Cachuma Lake campground (154 loses its shoulders a few miles short of the campground, or farm roads most of way to the Lake before you have to get on 154. A few more miles past the campground you can get off on Stagecoach road to climb over San Marcos pass, rejoining 154 briefly at 2240', then take Old San Marcos Pass road very steeply down into Santa Barbara to rejoin the main PCBR.