| Time | Date | Name | Meet |
|---|---|---|---|
| 51.20 | Aug. 7, 2019 | Grant Allison | Speedo Junior National Championships |
| 51.47 | July 28, 2019 | Grant Allison | Georgia Senior Long Course Championships |
| 52.43 | March 10, 2019 | Grant Allison | Southern Zone South Sectional Championships |
| 53.58 | July 29, 2018 | Philip Goeckel | Georgia Senior Long Course Championships |
| 53.65 | July 30, 2017 | Grant Allison | Georgia Senior Long Course Championships |
| 56.45 | July 22, 2017 | Luke Han | Georgia Age Group Championship |
| 56.87 | June 16, 2017 | Jordan Thompson | GA SCAT Sizzlin Summer Invitational |
