Cinco de Mayo Festival & Chihuahua Races 22 S. Delaware St. Saturday, May 04, 2013 10 A.M. - 7 P.M. Free Admission; Food and beverages will be available for purchase The annual Cinco de Mayo Celebration honors the Hispanic community's many contributions to the City of Chandler. The festival also features the popular Chihuahua Races and the crowning of the King and Queen Chihuahua.