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5. Rosie Ruiz, 1980 Boston Marathon winner
Cuban-born Rosie Ruiz landed in America in 1962, part of the Castro-induced diaspora.
She ended up taking first place at the 1980 Boston Marathon in a record time that was a whopping 25 minutes faster than her clock speed at the 1979 New York Marathon. Then it quickly became clear she hadn't run the whole 26.2 miles (she would retroactively be kicked out of the New York Marathon, too).
Ruiz's secret? She only joined the race about a half-mile from the finish line, busting through a crowd of spectators as a pack of male runners pushed by. Her post-scandal highlights include busts for embezzlement and cocaine sales.
Among the legacies of Ruiz's fakery are RFID surveillance check points used to keep roadrunners on the up-and-up. According to Wikipedia, that Ruiz-inspired system snagged a bunch of charity runners called "Jean's Marines" in the 2005 D.C.-based Marine Corps Marathon. Gomer Pyle wept.
Related: The incredible story of Fred Lorz, who "won" the gold medal in the 1904 St. Louis Olympic marathon by hitching a ride for 11 miles and literally walking the final 6.2 miles.
NEXT: I spitball on your grave...