Katie Ledecky's early Olympic success not surprising - Sports Illustrated
Italy's Federica Pellegrini winning the 400 M Freestyle in World Record time at the at the
Silverman smashes 400m freestyle world record
Katie Ledecky sets another world record - The Boston Globe
List of world records in swimming - Wikipedia
Titmus sets world record in short-course 400 freestyle
History made: Ledecky wins first-ever gold in 1500m freestyle
Katie Ledecky smashes world record while Michael Phelps wins individual gold | South China Morning Post
Women's 400m freestyle world record refreshed by American teenager - Sports - Chinadaily.com.cn
China's Sun blazes to record fourth 400m freestyle world crown
NO FILM, NO VIDEO, NO TV, NO DOCUMENTARY - U.S. swimmer Katie Ledecky set a world record in the 400-meter freestyle and won the gold medal on Sunday, Aug. 7, 2016 at
Katie Ledecky wins gold in women's 400 free, breaks her own world record
:format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/50317295/usa-today-9367125.0.jpg "2016 Olympics swimming results: Katie Ledecky delivers new world record in 400-meter freestyle - SBNation.com")
2016 Olympics swimming results: Katie Ledecky delivers new world record in 400-meter freestyle - SBNation.com
Daiya Seto: "I'm Aiming For Phelps' 400 IM World Record"
Australian swimmer Ian Thorpe, the current world record holder for the 200 and 400 metre Freestyle events, swims underwater whilst wearing his new full lenght bodysuit during an unveiling ceremony at Sydney's
China's Sun blazes to record fourth 400m freestyle world crown
2019 New Zealand Swimming Championship: Thomas and Doyle Qualify for FINA World Championships - Swimming World News
Katie Ledecky broke the world record in the 400-meter freestyle at the 2016 Olympics.
Katie Ledecky wins women's 400m freestyle in world record time | South China Morning Post
Australia's Titmus almost breaks 12-year women's 400m freestyle world record - Chinadaily.com.cn
400m Freestyle World Record
Swimming: Wang Jianjiahe breaks 400m freestyle world record | Sports | China Daily
Katie Ledecky Smashes Her Own World Record in 400 Freestyle - The New York Times
Ye Shiwen Breaks 400m Individual Medley World Record - London 2012 Olympics - YouTube
