Olympic gold medalist Ariarne Titmus has broken the women’s 400-meter freestyle world record at the Australian swimming championships.
Titmus clocked 3 minutes 56.40 seconds in final in Adelaide.
Her time bettered the previous benchmark of 3:56.46 set by her American rival Katie Ledecky at the 2016 Olympics.
Titmus beat Ledecky for Olympic gold in the 400m and 200 freestyle and finished behind the American great in the 800m freestyle final at last year’s Tokyo Games.