I don't even live there but in exploring the roads via google "street view" taking the highways 1 and 101 are the way to go. I use the "street view" feature a lot as it gives visual photos of the actual roads. That said, this https://cyclecalcoast.com/rides/pcbr/ gives you more detailed info about the route, including the narrow southbound 101 bridge near the Baron Ranch trailhead.
I found that website via a Gibiru search for *cycling from Santa Barbara to Gaviota .* -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/82454d89-0ddc-4efb-87b0-49bcae2d01a2n%40googlegroups.com.