- I'm so happy to see you.

- [Billie] When women come together to share their personal stories of pain, progress, and perseverance, something incredible happens.

- I've had some really great experiences, and this is going to be at the top of the list.

- [Billie] We move from being isolated to being in community with one another.

- I went through this, I struggled, before I became the best in the world in the heptathlon.

- That's such a cool thing to say.

(both laughing) - I know!

- I'm Billie Jean King, tennis champion and equal rights activist.

(cheering) I invited world-class athletes to team up for a series of one-on-one conversations to share their powerful stories of their individual roads to success.

- I started at a dust field because they told us that we were not allowed to stand on the field because it was for the boys.

- [Billie] Discussing everything from mental health to equal pay... - [Julie] We won that first World Cup, we won the Olympics.

We were literally still making $10 a day.

- $10 a day?

- Yes.

- I think the biggest battles really, have been with myself.

- I got outed, so I lost all my endorsements in 24 hours.

- [Jackie] Your voice gave others the voice, too, to stand up.

And I want to say thank you, because some of us don't have the strength.

- ♪ Don't underestimate me (upbeat music) ♪ Oh, right here, right now... ♪ - [Suni] I competed at the Olympics with a fractured shin.

- How did you do that?

- [Jackie] If I talked about my mental health, I was considered weak.

- These stories must be shared from one generation to the next, so we can keep building on the progress we've made.

- [Diana] The most amazing thing has been to see the impact it has had all over the world.

- [Nancy] They put that medal around your neck, and I realized wow, maybe I really have had an impact as a woman in sports.

- My role now is I've gotta mentor you to carry this over the line eventually.

You keep running, you sprint.

(upbeat music)