And then the sleeper story throughout this whole thing was the aging story. It was a sort of passing of the torch to the next generation of women-and men!-who are going to continue what has become a social revolution of women's running. Boston was a celebration of the past 50 years and looking ahead to the next 50 years. There were so many people that knew my story. Prevention: What was it like to run Boston again, 50 years after your historic first race? (The 21-day plan in Love Your Age is the life-changing reset every 40+ woman needs!) Play icon The triangle icon that indicates to play Prevention caught up with Switzer to talk about what it takes to be an athlete at 70-and beyond.

She ran the 10K at the National Senior Games, which is celebrating its own 30th anniversary this week. Now 70, Switzer is as passionate an advocate for seniors as she's always been for women. She went on to run 39 more marathons, including a return to Boston in 2017, 50 years after she first ran there. Not only did she campaign for the Boston Marathon to allow female racers, which it did in 1972, but she also cocreated the first women's-only road race later that year. 'Radicalized by the incident,' as she puts it, Switzer became a fierce advocate for women's running-a right we practically take for granted today. Switzer-only to be discovered, and chased after, by the disapproving race director in a now iconic photo of the event.

She went under the radar by signing up under the name K.V. In 1967, Kathrine Switzer became the first woman to officially enter the Boston Marathon- then open only to men.

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