He finally admits to Oprah to using enhancing substances during his career.

It all went down during an interview with Oprah Winfrey taped Monday, just a couple of hours after a wrenching apology to staff at the Livestrong charity he founded and has now been forced to surrender.

According to Oprah, she had over 100 questions for him and interview lasted 2 1/2 hours. Can you imagine?

The session was to be broadcast on Thursday but Winfrey said it will now run in two parts over two nights because there is so much material.

Winfrey described Armstrong as "forthcoming" in the interview and while he "did not come clean in the manner that I expected," she said she was "satisfied by the answers” he gave her.

Can't wait to watch this tomorrow!