Alameda County Fair in Pleasanton
The Alameda County Fair fills the Alameda County Fairgrounds in Pleasanton for roughly three and a half weeks each June and July, combining live horse racing on the country's oldest one-mile dirt track with a carnival midway, concerts, monster trucks, and a junior livestock show run by local 4-H and FFA members.
It is a substantial Bay Area fair with racing, exhibits, rides, and entertainment.