28 from 28 nations,313 from 65 nations were the competitors in Men's welterweight boxingat the Games of the XXXI Olympiad . The no. of events in sport was 14 . 5 September 1971 is when Men's welterweight boxingat the Games of the XXXI Olympiad was established  . Olympic BMX Center (BMX),Riocentro – Pavilion 6,Field were the venues of Men's welterweight boxingat the Games of the XXXI Olympiad . It was held in 7–20 August . 17 were the number of teams who competed in Men's welterweight boxingat the Games of the XXXI Olympiad . The sport has the official site www.hardrock100.com
Men's welterweight boxingat the Games of the XXXI Olympiad was held at Silverton, Colorado on 11 August