82 from 12 nations,200 from 43 nations were the competitors in Equestrianat the Games of the XXXI Olympiad . 3 events were there in Equestrianat the Games of the XXXI Olympiad . 30 July was when it was held . 1884; 135 years ago (1884) is when Equestrianat the Games of the XXXI Olympiad was founded  . The official site of Equestrianat the Games of the XXXI Olympiad is city2surf.com.au . The venue for Equestrianat the Games of the XXXI Olympiad was North Greenwich Arena
86 contestants from 17 nations