Holds annual Fair in June and July for San Diego County, as well as horse San Diego County Fair · Surfside Race Place Satellite Wagering Horse Racing. Mi., Juli. Holds annual Fair in June and July for San Diego County, as well as horse shows and other events. Facilities, events, and general information. Del Mar Fairgrounds - On the Ocean - San Diego North Del Mar Live Race Meet. The Del Mar Thoroughbred Club, where the turf meets the surf. Thoroughbred horse racing from Southern California.