Vinokourov began cycling in 1984 as an 11-year-old, competing within the former Soviet Union. He moved to France in 1997 to finish his amateur career, and then turned professional there in 1998. After almost a decade as a professional, Vinokourov was caught blood doping during the 2007 Tour de France, which triggered the withdrawal of the entire Astana team from that year's race. After a 2-year suspension from competition, he returned to cycling in August 2009, riding first for the national team of Kazakhstan and then rejoining Astana. A serious crash during the 2011 Tour de France threatened to prematurely end Vinokourov's career for a second time, but he announced he would continue for one more season in 2012 – with an eye towards competing in the Olympic Games in London. There, Vinokourov played the role of ultimate spoiler when he dramatically won the gold medal in the men's road race after breaking-away in the closing miles with Colombian Rigoberto Urán.