KEY POINTS

  • Caitlyn Jenner won the decathlon gold medal at the 1976 Summer Olympics
  • "Untold" will show Jenner's transformation from an Olympic hero to a trans woman
  •  The docu-series will premiere on Aug. 10

Athletes may feel like they have it all after a triumphant performance. But it was not so for Caitlyn Jenner, who felt like she was "hiding from the world" despite being a celebrated Olympic athlete back in the 1970s.

 "I spent my entire life hiding. I didn't want people to know me, and know who I was," she said in the newly-released trailer of Netflix's five-part documentary series, "Untold."

 The "Keeping up with the Kardashians" star won the decathlon gold medal at the 1976 Summer Olympics after a six-year career and was hailed as an Olympic hero. But that gave her only temporal joy. Deep inside, she yearned to let the world know who she truly was.

"I was an Olympic Champion, the greatest athlete in the world," she said. "But I was still the same old person, with all the same old issues."

Jenner, who was born male, came out as transgender in April 2015. In July the same year, she formally dropped her birth name "Bruce" and reintroduced herself to the public as "Caitlyn."

Jenner's transformation is just one of the highlights of "Untold," which digs deeper into some unforgettable stories in the world of sports. Premiering on Aug. 10, the documentary series will have five films, each with an 80-minute run time.

The first episode of "Untold," titled "Malice at the Palace," will discuss an infamous 2004 incident between players and fans at an NBA game in Michigan.

Metta Sandiford-Artest said in the teaser of the episode, "Some people have control over their emotions. I don't. I was trying to find any way to escape."

It will be followed by "Deal with the Devil" on Aug. 17. The episode will tell the story of Christy Martin's rise to boxing glory and her personal struggles as an abuse survivor.

Jenner's story will release on Aug. 24, followed by "Crime & Penalties" on Aug. 31, which tells the story of a hockey team with mob ties. The last episode, "Breaking Point," will be shown on Sept. 7 and will focus on tennis player Mardy Fish and his mental health issues.

Former Olympian champion Caitlyn Jenner, who is currently running for governor of California, said she is opposed to letting transgender girls take part in girls' sports Former Olympian champion Caitlyn Jenner, who is currently running for governor of California, said she is opposed to letting transgender girls take part in girls' sports Photo: AFP / VALERIE MACON