1884; 135 years ago (1884) is when Equestrianat the Games of the XXXI Olympiad was founded  . The sport has the official site chicagomarathon.com . 28 from 18 nations were the competitors in Equestrianat the Games of the XXXI Olympiad . Olympic Indoor Hall (artistic and trampoline) were the venues of Equestrianat the Games of the XXXI Olympiad . The no. of events in sport was 3 . It was held in 18 – 30 September 1988
Equestrianat the Games of the XXXI Olympiad will celebrate it's  Dodransbicentennial jubilee on 2059