Stanford sophomore Kristyn Williams broke the school indoor record for the 400 meters during a meet-record breaking performance at the UW Indoor Preview track and field meet Saturday.

Williams ran 53.39 on the 307-meter flat Mondo track at the Dempsey Indoor facility on the University of Washington campus.

The mark broke the Stanford mark of 53.57 by Amber Purnell and the meet mark of 55.41, by Amber Teteris, both from 2006. The time is the sixth-fastest, indoors or outdoors, in school history.

"She broke her foot in the 4x400 at the NCAA regionals last year," Stanford sprints and hurdles coach Jody Stewart said. "She finished the race, but she's spent all her time since then getting fit and getting strong. She's had a challenging comeback. Now, she's definitely proven she's on pace to do something special."