SEASON 4, EPISODE 501 | AIRED ON 10/06/13

Oprah and Diana Nyad, Parts 1 and 2

Oprah interviews Diana Nyad, who, at age 64, inspired the world when she became the first person to swim from Cuba to Florida without a shark cage, finishing in just under 53 hours. It's a revealing conversation about chasing dreams, pushing limits and daring with intention and purpose.

Diana was a prodigy in the pool from the time she started swimming competitively at age 10. She first earned international acclaim in 1975, when she swam around Manhattan in a record-breaking eight hours. Four years later, and with several world records to her name, she retired from swimming, on her 30th birthday.

She went on to become a professional sportscaster, author and motivational speaker. Eventually, though, after losing her mother in 2007 and experiencing what she called an existential crisis, Diana returned to the ocean—and to a journey that would test her mind, body and soul.