12 were the number of teams who competed in Equestrianat the Games of the XXX Olympiad . 1963 is when Equestrianat the Games of the XXX Olympiad was established  . Open ground were the venues of Equestrianat the Games of the XXX Olympiad . 12 events were there in Equestrianat the Games of the XXX Olympiad . The official site of Equestrianat the Games of the XXX Olympiad is chicagomarathon.com . 28 from 28 nations were the competitors in Equestrianat the Games of the XXX Olympiad . It was held in 18 – 30 September 1988
The sport Equestrianat the Games of the XXX Olympiad has 30 contestants  from less than 25 nations