Why Famous: Katie Ledecky has won more Olympic swimming medals than any other female swimmer. In 2012 at the London Olympics aged 15 she won the women's 800-metre freestyle. At the 2016 Rio Olympics she was won more medals than any other female athlete at the Games - 4 golds and 1 silver.
Ledecky also has won 14 world championship titles and broken 13 world records.
- 2016-08-07 American swimmer Katie Ledecky sets a new world record with a time of 3:56.46 to win the gold medal in the women's 400m freestyle at the Rio de Janeiro Olympics
- 2016-08-09 American swimmer Katie Ledecky wins her second gold medal of the Rio de Janeiro Olympics in 1:53.73 in the women's 200m freestyle ahead of Sarah Sjöström of Sweden and Australian Emma McKeon
- 2016-08-12 American star swimmer Katie Ledecky sets world record 8:04.79 to dominate the women's 800m field at the Rio de Janeiro Olympics; medal tally of 4 gold, 1 silver make her most decorated US female athlete at one Olympics