Summer Mcintosh 400 Im 2024 Nfl. Summer mcintosh wasn’t the only record setter in the 400 im final. Canada's summer mcintosh earned her third world record at short course worlds, shattering the 400m individual medley by over three seconds.

Summer mcintosh wins the 400m individual medley by 5.69 seconds over katie grimes, one day after leon marchand won the men’s 400m im by 5.67 (a record margin for that race). American katie grimes was under world record pace through the 200 meter mark, and fell off, placing 2nd to mcintosh in 4:20.14.