The Santa Inez Valley is a great place to bike (be ready to climb some hills). For maps: http://www.sbbike.org/region/rides/rides.html

http://www.sb-outdoors.org/Trails/index2.php/?Trail_Loc=Santa%20Ynez%20Valley&Trail_Type=Road%20Ride

Also, I can't find it for sale online, but we use Ray Ford's "Santa Ynez Valley Road Bicycling Routes", Map No. 6 in the Santa Barbara County Recreational Map Series, copyright 1989. It might be available at a local bookstore or bike shop.