This is Lynn Hill. She was a professional rock climber in the late 1980's and early 1990's. Rock climbing is one modern sport in which, all else being equal, women and men have a chance to compete fairly, at least partly because the ratio of strength to weight is what matters most. Hill specialized in free climbing, which means she would use climbing aids only for safety, not for actual assistance in scaling the rock face.
Hill was well aware that she was representing women in a sport currently dominated by men. She told John Steiger in an interview for Climbing Magazine (August 1987), "Society's contrived image of what a woman should or shouldn't be is something I've never agreed with. Developing muscles is something people look down upon. You see women who have definition and your average American will say, 'Ooh, she looks too muscular.' You look at the Miss America Pageant and all of them have pencil arms. There's just no definition. The classic American beauty has no muscle tone. What does she do all the time?"
In an interview for Rock & Ice (May–June 1992, as quoted on her Wikipedia article), Hill recalled the sexism which ran rampant in the sport: "I remember asking about the disparity between prize money for men and women. The only response I got was, 'If the women climb without their tops, then we'll pay them the same.'" (This disparity still exists in many sports, including soccer, in which members of the wildly successful women's team earn only about a quarter what their male counterparts earn on the men's team, and the men’s team is mediocre at best.)
Undaunted, Hill continued to climb both personally and professionally. The famous French climber Jean-Baptiste Tribout, who in 1989 had become the first climber to free climb the Masse Critique in France, boasted soon afterward that a woman would never be able to climb the Masse Critique. Hill proved him wrong in 1990, scaling the rock in fewer attempts than Tribour had needed.
In 1993 she achieved what is arguably the high point of her career, becoming the first climber (nota bene: not just the first woman, but the first human, period) to free climb The Nose on El Capitan in Yosemite National Park. This endeavor took her four days, but a year later she did it again, this time in just under one day.
After completing her historic ascent of El Capitan, she uttered what was to become one of rock climbing's most iconic phrases, a challenge to the men of the sport from the woman who was every bit their equal, if not their better: "It goes, boys."