Katie Ledecky broke one of her many world records in the 400-meter freestyle Sunday, adding to the 19-year-old's growing legend.
She delivered the United States' first gold of Rio 2016, clocking 3:56.46, eclipsing her previous best by almost two seconds.
It's a habit of hers — Ledecky has set 12 world records in her stellar career.
.@katieledecky has become one of the most dominant swimmers in history! Congratulations on your WR! #SwimUnited pic.twitter.com/w7VGsdu8va
— USA Swimming (@USASwimming) August 8, 2016
Here's a look at all of her landmark times.