Time | Date | Name | Team | Meet |
---|---|---|---|---|
51.43 | Nov. 16, 2012 | Olivia Smoliga | Glenbrook South High School | 13 Illinois Girls High School Championships |
53.43 | Nov. 19, 2010 | Olivia Smoliga | Glenbrook South High School | Illinois Girls State Championships |
55.56 | Nov. 21, 2008 | Jane Munro | Evanston Township High School | Illinois Girls State Championships |