Mário José dos Santos Júnior (born 10 September 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.Biscayart, Eduardo (2012-03-20). Colombians shine at South American Race Walking champs. IAAF. Retrieved on 2012-03-25.
Achievements Representing 1998South American Junior ChampionshipsCórdoba, Argentina 1st10,000 m42:14.02World Junior ChampionshipsAnnecy, France —10,000mDNF1999South American ChampionshipsBogotá, Colombia 3rd20,000 m1:33:50.592001South American ChampionshipsManaus, Brazil 2nd20,000 m1:32:45.90UniversiadeBeijing, China15th20 km1:31:432003Pan American GamesSanto Domingo, Dominican Republic 2nd50 km4:07:372004Olympic GamesAthens, Greece40th50 km4:20:112007Pan American GamesRio de Janeiro, Brazil4th20 km1:29.53 –50 kmDQ2008Olympic GamesBeijing, China41st50 km4:10:252009South American ChampionshipsLima, Peru5th20,000 m1:25:14.8World ChampionshipsBerlin, Germany –50 kmDNF2015World Championships Beijing, China –50 kmDNF
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