| Time | Date | Name | Meet |
|---|---|---|---|
| 46.62 | March 1, 2019 | Jack Doherty | - |
| 46.62 | March 1, 2019 | Jack Doherty | Florida Invitational Last Chance |
| 46.78 | Feb. 22, 2019 | Jack Doherty | Colonial Athletic Association Championships |
| 47.55 | Feb. 27, 2015 | Justin Barden | Colonial Athletic Association Championships |
| 47.83 | Feb. 28, 2014 | Justin Barden | Colonial Athletic Association Championships |
| 48.74 | March 1, 2013 | Kendall Shaw | Colonial Athletic Association Championships |
| 49.36 | Feb. 24, 2012 | Kendall Shaw | Colonial Athletic Association Championships |
| 49.47 | Feb. 25, 2011 | Kendall Shaw | Colonial Athletic Association Championships |
| 50.40 | Feb. 27, 2009 | Geoff Ramsdell | Colonial Athletic Association Championships - Day Three - Finals |
