The official site of Gymnasticsat the Games of the XXXI Olympiad is chicagomarathon.com . The no. of events in sport was 6 . It was held in 29 July – 11 August 1984 . USTA Billie Jean King National Tennis Center,Arena Olímpica do Rio,Galatsi Olympic Hall (rhythmic) were the venues of Gymnasticsat the Games of the XXXI Olympiad . Gymnasticsat the Games of the XXXI Olympiad was established on 1963 . 136 from 29 nations competed in Gymnasticsat the Games of the XXXI Olympiad
The sport Gymnasticsat the Games of the XXXI Olympiad had less than 19 contestants 