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

Katie Ledecky delivered another masterclass in distance swimming to collect her sixth world title in the 1,500 metres freestyle on Tuesday and while she was never threatened in the final she felt her rivals were helping her push the sport forward.

Katie Ledecky won her seventh world title in the 800 meter freestyle on Saturday, Aug. 2 at swimming's world championships, just edging surprise Lani Pallister in a thrilling race while Ledecky's top rival Summer McIntosh finished third.

Ledecky, trailing McIntosh at the 700-meter mark, surged ahead on the final lap, fending off a hard-charging Pallister as McIntosh faded in the closing meters. With the win, Ledecky remained undefeated in the 800-meter freestyle finals event on the world stage dating back to 2012.

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

In other events, Gretchen Walsh became the first American woman to ever win gold at the world championships in the 50m butterfly. Regan Smith and Claire Curzan took silver and bronze, respectively, in the women's 200m backstroke. Jack Alexy's bronze in the men's 50 freestyle was his third medal of the 2025 world championships.