Clara Hughes reveals 1994 doping positive

In an autobiography to be released September 8, Canadian Clara Hughes details the cover up of a 1994 positive test for ephedrine at the World Championships in which she finished fourth. Hughes went on to win two bronze medals at the 1996 Atlanta Olympic Games in her road racing career, also riding the Sydney and London Olympic games. Hughes also competed as a speed skater during her cycling career, winning gold at the Turin 2006 Winter Olympic Games.