The 2016 Olympics have been good to American swimmer Katie Ledecky. She managed to break the world record in 400 Freestyle previously set by ... well, herself.
Ledecky secured her first gold medal in Rio when she won the women's 400 freestyle with a time of 3:56.46 seconds. The previous record was 3:58.37.
This marks the 12th world record for Ledecky since the London games in 2012. She now owns the 10 fastest performances in the 400.
This race comes the day after she made her Olympic sprint debut at the 4x100-meter freestyle relay that earned the team a silver medal and set a new American record.
She still has two more events to compete at before the Olympics are over.