Summer McIntosh smashed the women’s 400m freestyle world record in winning the title at the Canadian Swimming trials with a time of 3:54.18 on Saturday.
McIntosh, a three-time Olympic gold medallist and former world record-holder in the event, sliced more than a second off the previous world record of 3:55.38 set by Australian Ariarne Titmus at the 2023 World Championships in Fukuoka, Japan.
