Olympic BMX Center (BMX),Riocentro – Pavilion 6,Field were the venues of Men's welterweight boxingat the Games of the XXXI Olympiad . 5 September 1971 is when Men's welterweight boxingat the Games of the XXXI Olympiad was established  . 28 from 28 nations,313 from 65 nations competed in Men's welterweight boxingat the Games of the XXXI Olympiad . The official site of Men's welterweight boxingat the Games of the XXXI Olympiad is www.hardrock100.com . 17 were the number of teams who competed in Men's welterweight boxingat the Games of the XXXI Olympiad . 7–20 August was when it was held . The no. of events in sport was 14
Men's welterweight boxingat the Games of the XXXI Olympiad was started on 5 September 1971