Summer McIntosh breaks 400m freestyle world record, passes Ledecky, Titmus

Summer McIntosh, a 16-year-old, broke the women’s 400m freestyle world record at Canada’s swimming trials on Tuesday night.

McIntosh clocked 3 minutes, 56.08 seconds in Toronto. Australian Ariarne Titmus held the previous record of 3:56.40, set last May. Before that, Katie Ledecky held the record since 2014, going as low as 3:56.46.

“Going into tonight, I didn’t think the world record was a possibility, but you never know,” McIntosh, who had quotes from Ledecky on her childhood bedroom wall, said in a pool-deck interview moments after the race.

McIntosh’s previous best time was 3:59.32 from last summer’s Commonwealth Games. She went into Tuesday the fourth-fastest woman in history behind Titmus, Ledecky and Italian Federica Pellegrini.

She is also the third-fastest woman in history in the 400m individual medley and the 11th-fastest in the 200m butterfly, two events she won at last June’s world championships. She is the world junior record holder in those events, too.

MORE: McIntosh chose swimming and became Canada’s big splash

McIntosh, Titmus and Ledecky could go head-to-head-to-head in the 400m free at the world championships in July and at the 2024 Paris Olympics. Titmus is the reigning Olympic champion. Ledecky is the reigning world champion, beating McIntosh by 1.24 seconds last June while Titmus skipped the meet.

Ledecky, whose best events are the 800m and 1500m frees, broke her first world record in 2013 at 16 years and 4 months old.

McIntosh is 16 years and 7 months old and trains in Sarasota, Florida, which is 160 miles down Interstate 75 from Ledecky in Gainesville.

McIntosh, whose mom swam at the 1984 Olympics and whose sister competed at last week’s world figure skating championships, is the youngest