At the 2024 U.S. Olympic Swimming Trials, American swimmer Gretchen Walsh set a world record in the women’s 100-meter butterfly. What was her record-breaking time?

Gretchen Walsh Sets World Record in 100m Butterfly at 2024 US Olympic Swimming Trials.

Walsh clocked 55.18 seconds in the 100-meter women’s butterfly.

Walsh’s time beat out Swedish swimmer Sarah Sjöström, who recorded the previous fastest time of 55.48 seconds at the 2016 Olympics in Rio de Janeiro, by more than half of a second.