The 2024 U.S. Olympic Swim Trials have been marked by record-breaking performances and intense competition. Gretchen Walsh set a new world record in the women's 100-meter butterfly with a time of 55.18 seconds, surpassing the previous mark set by Sarah Sjöström in 2016. Walsh secured her place on the U.S. Olympic team by winning the final in 55.31 seconds. Regan Smith broke her own American record in the semifinals of the women's 100 backstroke with a time of 57.47 seconds, narrowly missing the world record, while Katharine Berkoff became the fourth-fastest woman ever in the 100 backstroke with a time of 57.83 seconds. Other notable performances include Carson Foster securing his spot in the men's 400-meter individual medley and Bobby Finke aiming for a second Olympic appearance in the 800 freestyle.