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Katie Ledecky dominates the 400 meter freestyle in Bloomington | NBC Sports
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Kathleen Genevieve Ledecky is an American competitive swimmer. She has won five Olympic gold medals and 14 world championship gold medals, the most in history for a female swimmer. She is the current world-record holder in the women's 400-, 800-, and 1500-meter freestyle. She also holds the fastest-ever times in the women's 500-, 1000-, and 1650-yard freestyle events.