| Time | Date | Name | Meet |
|---|---|---|---|
| 46.15 | Feb. 16, 2024 | Tim Stollings | Great Midwest-Mountain East Conference Championship |
| 46.18 | Dec. 1, 2023 | Tim Stollings | Calvin Winter Invitational |
| 46.34 | March 10, 2023 | Tim Stollings | NCAA Division II Championship |
| 46.73 | April 1, 2021 | Tim Stollings | GMAC & MEC Championship |
| 46.96 | March 19, 2021 | Tim Stollings | NCAA Division II Championships |
| 47.20 | Feb. 20, 2021 | Tim Stollings | Findlay vs. Malone |
| 48.53 | Feb. 14, 2020 | Tim Stollings | Great Midwest-Mountain East Conference Championship |
| 49.40 | Dec. 6, 2019 | Tim Stollings | Calvin Invitational |
| 50.75 | Feb. 14, 2019 | Trae Gulgin | Great Midwest-Mountain East Conference Championship |
| 50.99 | Feb. 10, 2017 | Trae Gulgin | Great Lakes Intercollegiate Athletic Conference |
| 51.26 | Dec. 2, 2016 | Trae Gulgin | Calvin Winter Invitational |
| 51.46 | Feb. 12, 2016 | Ross Stansbery | Great Lakes Intercollegiate Athletic Conference |
| 52.16 | Feb. 11, 2016 | Trae Gulgin | Great Lakes Intercollegiate Athletic Conference |
| 52.48 | Feb. 12, 2010 | Greg Swain | Great Lakes Intercollegiate Athletic Conference |
| 53.08 | Feb. 11, 2010 | Greg Swain | Great Lakes Intercollegiate Athletic Conference |
| 1:00.54 | Oct. 17, 2008 | Tim Moon | Findlay @Ashland |
