| Name | Time | Date | Meet |
|---|---|---|---|
| Leo Yang | 51.99 | Feb. 3, 2024 | Caltech vs. La Verne |
| Leo Yang | 52.76 | Feb. 5, 2022 | Caltech vs. La Verne |
| Henry Steiner | 54.92 | Feb. 9, 2019 | Caltech vs. La Verne |
| Alex Moraru | 57.35 | Feb. 4, 2017 | Caltech vs. La Verne |
| Tom Kwong | 1:00.56 | Feb. 8, 2013 | Chapman vs. Cal Tech |
