Mário José dos Santos Júnior (born September 10, 1979 in Cubatão, São Paulo) is a male race walker from Brazil. He competed for his native country in two consecutive Summer Olympics, starting in 2004 (Athens, Greece). He won the 50 km section of the 2012 South American Race Walking Championships with a time of 4:12:52 hours. Achievements References sports-reference 1979 births Living people Brazilian male racewalkers Athletes (track and field) at the 2003 Pan American Games Athletes (track and field) at the 2007 Pan American Games Athletes (track and field) at the 2004 Summer Olympics Athletes (track and field) at the 2008 Summer Olympics Athletes (track and field) at the 2016 Summer Olympics Olympic athletes of Brazil Pan American Games athletes for Brazil Sportspeople from São Paulo (state) World Athletics Championships athletes for Brazil Pan American Games medalists in athletics (track and field) Pan American Games silver medalists for Brazil Medalists at the 2003 Pan American Games 21st-century Brazilian people