29 July – 11 August 1984 was when it was held . 136 from 29 nations were the competitors in Gymnasticsat the Games of the XXXI Olympiad . The sport has the official site chicagomarathon.com . 1963 is when Gymnasticsat the Games of the XXXI Olympiad was established  . The venue for Gymnasticsat the Games of the XXXI Olympiad was USTA Billie Jean King National Tennis Center,Arena Olímpica do Rio,Galatsi Olympic Hall (rhythmic) . The no. of events in sport was 6
Gymnasticsat the Games of the XXXI Olympiad was held at Galatsi Olympic Hall (rhythmic) on 29 July – 11 August 1984