 The Special Olympics USA Games is a national Special Olympics event held every four years in the United States.The first, quadrennial, USA National Games were held July 1–8, 2006, in Ames, Iowa.The city of Ames and Iowa State University hosted over 3,000 athletes from all 50 states in 13 sports, including aquatics, basketball, bocce, bowling, golf, artistic gymnastics, rhythmic gymnastics, powerlifting, soccer, softball, tennis, track and field, and volleyball.