Date of Birth: 
About Mário dos Santos
- 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.
Read more at Wikipedia