Lance Armstrong admits doping to Oprah - CBS News AUSTIN, TEXASA person familiar with the situation says Lance Armstrong confessed to Oprah Winfrey during an interview Monday that he used performance-enhancing drugs to win the Tour de France. The admission -- made in an interview to be broadcast Thursday on Winfrey's network -- was first revealed by the Associated Press and later confirmed by CBS News. Winfrey will appear on "CBS This Morning" on Tuesday to talk about the Armstrong interview. After the interview, Winfrey tweeted: "Just wrapped with @lancearmstrong More than 2 1/2 hours . He came READY!"