| Time | Date | Name | Meet |
|---|---|---|---|
| 46.17 | Nov. 12, 2023 | Blake Jorgens | Eagle Invitational |
| 46.34 | March 4, 2023 | Blake Jorgens | NAIA National Championships |
| 46.63 | Nov. 20, 2021 | Blake Jorgens | Saint Mary (KS) vs. Sterling vs. Simpson College |
| 48.39 | Nov. 6, 2021 | Blake Jorgens | Illinois College vs. Saint Mary (KS) |
| 48.69 | Sept. 25, 2021 | Blake Jorgens | 3rd Annual Sam Freas Invitational |
| 48.88 | March 7, 2020 | Brandon Powell | NAIA Championships |
| 48.98 | Dec. 6, 2019 | Brandon Powell | USM_SAU Dual |
| 50.52 | Dec. 8, 2018 | Andrew Goode | St. Ambrose vs. St. Mary's University |
| 54.62 | Oct. 27, 2018 | Brendan Jamerson | Lincoln vs. Illinois College, St. Mary |
| 56.09 | Sept. 21, 2018 | Brendan Jamerson | Shawnee Invitational |
