Katie Ledecky of the United States reacts after competing in the women's 800-meter freestyle heats at the World Aquatics Championships in Singapore, Friday, Aug.1, 2025. (AP Photo/Vincent Thian)
Summer McIntosh of Canada reacts during the women's 800-meter freestyle heats at the World Aquatics Championships in Singapore, Friday, Aug.1, 2025. (AP Photo/Vincent Thian)
Katie Ledecky of the United States reacts after competing in the women's 800-meter freestyle heats at the World Aquatics Championships in Singapore, Friday, Aug.1, 2025. (AP Photo/Vincent Thian)
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Summer McIntosh of Canada reacts during the women's 800-meter freestyle heats at the World Aquatics Championships in Singapore, Friday, Aug.1, 2025. (AP Photo/Vincent Thian)
SINGAPORE (AP) — The United States set the world record in the 4x100 mixed relay on Saturday, clocking 3 minutes, 18.48 seconds in the swim world championships.
The old record was 3:18.83 set in 2023 by Australia.
It was only the second world mark set in these championships. It came on a night when the United States won three gold medals, by far its best performance in what had been a lackluster championships for the team.
Katie Ledecky won the 800 freestyle and Gretchen Walsh took the 50-meter butterfly. The Americans now have seven gold medals. The championships close on Sunday.
