The United States set the world record in the 4x100 freestyle mixed relay, clocking 3 minutes, 18.48 seconds in the swim ...

In other events, Gretchen Walsh became the first American woman to ever win gold at the world championships in the 50m ...

Katie Ledecky remains unbeaten in the 800 freestyle, while the Americans set a world relay record and piled up three gold ...

Katie Ledecky continued her dominance in the 800m freestyle event at the world championships on Saturday by winning her ...

Canadian swimming phenom Summer McIntosh was unable to beat American star Katie Ledecky in the women's 800-metre freestyle at ...

The epic battle was one of the greatest races in history. In the end, the 28-year-old American captured her seventh world championship in the event.

American Katie Ledecky continued domination of the women's 800 meters freestyle with a brilliant swim to win gold.

Not much gets by Katie Ledecky. Not in the pool, and not in matters around it. So when Ledecky took to the podium after ...

Ledecky won the 800 meters on Saturday at the World Aquatics Championships in Singapore, fending off challenges from ...