Marino qualified for the Argentine squad in men's BMX cycling at the 2008 Summer Olympics in Beijing by receiving one of the nation's two available berths based on his top-ten performance from the UCI BMX World Rankings. After he grabbed a twenty-first seed on the morning prelims with a time of 36.768, Marino scored a total of 20 placing points to take the eighth spot in his quarterfinal heat, thus eliminating him from the tournament.