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USA Swimming Zone Teams
| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 3:57.12 | July 20, 2019 | Cameron Kelley | Linn-Mar Swim Team | Speedo Champions Series - Minneapolis |
| 3:58.41 | Aug. 4, 2018 | Trent Frandson | Central Iowa Aquatics | USA Swimming Futures Championships (Rochester) |
| 3:59.61 | July 24, 2009 | Paul Gordon | Hawkeye Swim Club | Speedo Champions Series - Minneapolis |
| 4:03.33 | Aug. 10, 2006 | Steven Brus | Davenport Metro Swim Team | USA Swimming Junior National Championships |
| 4:11.96 | July 24, 2003 | Charlie Cunnick | Bettendorf Swim Club | Speedo Champions Series - Minneapolis |
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