Katie Ledecky secured her seventh consecutive world title in the 800m freestyle at the 2025 World Aquatics Championships, defeating Summer McIntosh in a thrilling race. Ledecky's victory in Singapore extends her decade-long dominance in the event.

Canadian swimming phenom Summer McIntosh was unable to beat American star Katie Ledecky in the women's 800-metre freestyle at the world championships Saturday, ending her quest to win five individual gold medals in Singapore.

Australian Kaylee McKeown and American Regan Smith went one-two in the 200m backstroke, just as they did in all three backstrokes at the 2023 Worlds, both backstrokes at the 2024 Olympics and in the 100m back earlier at these worlds.