The 2016 Summer Olympics officially known as the Games of the XXXI Olympiad and commonly known as RIO 2016, was an international multi-sport event that was held from 5 to 21 August 2016 in RIO de JANEIRO, BRAZIL, with preliminary events in some sports beginning on 3 August.
   These were the first OLYMPIC GAMES ever to be held in South America and the third to be held in a developing country, after the 1968 games in MEXICO CITY and the 1988 games in SEOUL, SOUTH KOREA.
   More than 11,000 athletes from 205 National Olympic Committees, including first time entrants Kosovo, South Sudan, and the Refugee Olympic Team, took part. 

   With 306 sets of medals, the games featured 28 Olympic sports, including rugby sevens and golf, which were added to the Olympic program in 2009.
   These sporting events took place at 33 venues in the host city, and at five separate venues in the Brazilian cities of SÃO PAULO, BELO HORIZONTE, SALVADOR, BRASÍLIA, and MANAUS (i.s.).