Florence Griffith-Joyner

At the 1988 Seoul Olympics, she won three gold medals (100m, 200m, 4x100m relay) and set the 200m world record of 21.34s, which stood until 2023. She revolutionized the sport with her flamboyant style, but it's her concrete numbers—like a 10.49s that remains a 0.11s gap ahead of the second-fastest legal time—that cement her as the fastest woman ever.