| Name | Time | Date | Meet |
|---|---|---|---|
| Aaron Dies | 45.07 | March 12, 2021 | 2021 Indiana Swimming Senior Championships |
| Joe Radde | 45.73 | Dec. 13, 2020 | MI OLY Winter Invite |
| Joe Radde | 45.88 | Dec. 11, 2020 | MI OLY Winter Invite |
| Joe Radde | 45.90 | Nov. 15, 2020 | 2020 IN ELK Skypoint Transit Invitational |
| Kyle Morris | 46.41 | March 11, 2016 | Indiana Senior State Championships |
| Louis Cavadini | 46.18 | March 14, 2003 | Indiana Senior State |
