| Name | Time | Date | Meet |
|---|---|---|---|
| Joe Grebner | 59.32 | July 23, 2022 | 2022 SD LC Championships |
| Joe Grebner | 1:01.29 | July 24, 2021 | South Dakota LC Championships |
| Adam Kastigar | 1:01.73 | March 9, 2012 | Speedo Champions Series - Pleasant Prairie, WI |
| Jacob Fuhrman | 1:03.59 | July 24, 2009 | Speedo Champions Series - Minneapolis |
