Three Arizona race tracks run thoroughbred and quarter horse races, while two county fairs hold annual two-day meets.Īlthough Arizona’s county fairs only hold two race days a year, they’re worth checking out because they offer higher-than-average payouts thanks to AZ Rev Stat § 5-111 (D) exempting them from the 2-5% state tax on pari-mutuel pools. Other regulations require operators to contribute a percentage of their revenue to support the local horse racing industry, promote responsible gambling, and pay winning tickets promptly. However, state law also requires licensed Arizona ADWs to implement modern security standards to protect customers’ private information and funds. State law requires all Arizona horse racing betting sites to confirm each new customer’s age and identity by requesting certain personal details, like their name, address, e-mail, etc. Readers 21 and older can visit any licensed operator’s website to download the app or register online, claim a welcome bonus, and bet on horse races. Licensed Arizona Horse Racing Betting Sites