| Name | Time | Date | Meet |
|---|---|---|---|
| Joe Grebner | 52.17 | March 3, 2023 | SD Short Course State Championship |
| Chris Erickson | 52.36 | March 3, 2018 | South Dakota Short Course Championships |
| Chris Erickson | 52.49 | Jan. 20, 2018 | MN FOXJ Winter Classic |
| Chris Erickson | 52.68 | Dec. 1, 2017 | Minnesota Invitational |
| Chris Erickson | 53.40 | March 10, 2017 | Speedo Champions Series - Iowa City |
| Chris Erickson | 53.45 | Nov. 11, 2016 | November Open |
| Tucker Iwerks | 53.76 | March 14, 2014 | Speedo Champions Series - Pleasant Prairie, WI |
