Whatever your dream about horseback riding might be, you'll probably find it in Sonoma County: Cantering swiftly on a beautiful beach at sunset, waves crashing alongside, Comfortably astride a gentle horse that's picking its way through a thick forest, the only sound a persistent woodpecker, trotting smoothly alongside a fast-moving, early-spring stream, a leisurely trail ride through neat rows of lush grapevines ending with a wine tasting. Anything is possible.