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USA Swimming Zone Teams
| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 47.16 | Dec. 1, 2012 | Margo Geer | Tucson Ford Dealers Aquatics | AT&T Winter National Championships |
| 48.73 | Jan. 17, 2009 | Lacey NYMEYER | Tucson Ford Dealers Aquatics | Toyota Grand Prix |
| 50.16 | March 23, 2007 | Emma DARLINGTON | Tucson Ford Dealers Aquatics | NCSA Junior Nationals |
| 50.17 | March 21, 2007 | Emma DARLINGTON | Tucson Ford Dealers Aquatics | NCSA Junior Nationals |
| 50.43 | Jan. 13, 2007 | Emma DARLINGTON | Tucson Ford Dealers Aquatics | Toyota Grand Prix |
| 50.83 | April 7, 2003 | Skye Elbert | Arizona Desert Fox | NCSA Junior National Championships |
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