Summer McIntosh led from start to finish to win her fourth gold at the Singapore world championships on Sunday with a dominant victory in the 400m individual medley. McIntosh won three golds, including in both individual medley events,

Canadian star Summer McIntosh completed arguably the greatest world championships ever by a female swimmer, capturing her fourth gold medal in Singapore after winning the women’s 400m individual medley in 4:25.78.

Olympic champions Summer McIntosh and Leon Marchand cruise to gold medals in the women's and men's 400m individual medley on the final day of the 2025 World Aquatics Championships in Singapore.