Australia’s Lani Pallister achieved a historic victory over Katie Ledecky at the Pan Pacific Championships held in Irvine, California, marking Ledecky’s first defeat in the 800m freestyle at a major international meet. Pallister led the race from start to finish, clocking in at 8 minutes 06.10 seconds, while Ledecky finished second with a time of 8:07.26.

Ledecky, who has dominated the 800m freestyle since winning Olympic gold in 2012 at just 15 years old, had an impressive streak, securing 13 international golds, including four Olympic medals and seven world titles. Despite her remarkable career, Pallister’s performance broke Ledecky’s long-standing rule of never losing in the event.

Earlier in the week, Pallister had already claimed her first career victory over Ledecky in the 400m freestyle but finished second in the 1,500m. After her triumph, Pallister expressed her admiration for Ledecky, stating, "Katie is such a dominant force... Without her, we wouldn’t have women’s distance swimming in the place we’re at at the moment."

In other events, Australian Jamie Jack won the men’s 50m freestyle in 21.35 seconds, while Zac Stubblety-Cook secured gold in the men’s 200m breaststroke with a time of 2:08.09. Sam Short set an Australian record in the 1,500m freestyle at 14:33.97, adding to his golds in the 400m and 800m. He finished significantly ahead of Kazushi Imafuku from Japan and Bobby Finke, a two-time Olympic gold medalist.