| Name | Time | Date | Meet |
|---|---|---|---|
| Dillon McDermott | 51.98 | Feb. 18, 2023 | NESCAC Mens Championships |
| Nicholas Celestin | 52.87 | Jan. 23, 2016 | Wesleyan vs. Bowdoin, Colby, Trinity |
| Nicholas Celestin | 54.40 | Dec. 12, 2015 | Bates vs. Trinity (CT) |
| Nicholas Celestin | 54.72 | Dec. 2, 2012 | Hamilton Invitational |
| Xiaoqi Ma | 56.07 | Nov. 16, 2012 | Trinity (Connecticut) vs. Mount Holyoke |
| Andrew Boynton | 57.03 | Dec. 5, 2010 | Cardinal Invitational |
| Daniel Remigino | 57.83 | Dec. 6, 2009 | Cardinal Invitational |
