In June, the U.S. Anti-Doping Agency charged Armstrong with using performance-enhancing drugs; in August they instituted a lifetime ban from the sport. Armstrong soon after announced that he would no longer fight the charges. Two months later, the 41-year-old stepped down as chairman of his cancer charity, LiveStrong.
The 90-minute episode of Oprah's Next Chapter will air Thursday, Jan. 17 at 9/8c on OWN. The interview will also be simultaneously streamed on Oprah.com.