| Time | Date | Name | Meet |
|---|---|---|---|
| 45.57 | March 18, 2021 | Tim Stollings | NCAA Division II Championships |
| 46.02 | Feb. 20, 2021 | Tim Stollings | Findlay vs. Malone |
| 46.45 | Feb. 19, 2021 | Tim Stollings | Malone vs Findlay |
| 46.53 | Feb. 13, 2020 | Tim Stollings | Great Midwest-Mountain East Conference Championship |
| 47.80 | March 15, 2018 | Janko Radmanovic | NCAA Division II Championship |
| 47.82 | March 10, 2016 | Janko Radmanovic | NCAA Division II Championships |
| 48.85 | Feb. 12, 2015 | Janko Radmanovic | Great Lakes Intercollegiate Athletic Conference |
| 49.42 | Dec. 4, 2014 | Janko Radmanovic | Calvin Winter Invitational |
| 51.18 | Oct. 17, 2014 | Janko Radmanovic | Findlay vs. Hillsdale, Malone, Ohio |
| 51.87 | Oct. 10, 2014 | Janko Radmanovic | Ashland vs. Findlay |
| 52.23 | Feb. 10, 2012 | TIMOTHY ANDERSSON-LIND | Great Lakes Intercollegiate Athletic Conference Championships |
| 52.32 | Feb. 11, 2011 | TIMOTHY ANDERSSON-LIND | Great Lakes Intercollegiate Athletic Conference Championships |
| 53.28 | Oct. 17, 2008 | Tim Moon | Findlay @Ashland |
