| Name | Time | Date | Meet |
|---|---|---|---|
| Ilya Kharun | 48.80 | Oct. 16, 2022 | 2022 CA SAND Sandpiper Pumpkin |
| Ilya Kharun | 50.70 | Oct. 23, 2021 | CA SAND Sandpipers Pumpkin Invitational |
| Tyler Edlefsen | 53.28 | Oct. 21, 2018 | CA SAND Pumpkin Invitational |
| Ahmed Mohamed | 56.05 | Oct. 21, 2017 | CA SAND Pumpkin Invitational |
| Brennan Gravley | 1:04.35 | Feb. 23, 2013 | Nevada State SC Championships |
| Cody Miller | 1:09.17 | Dec. 6, 2002 | Winter AA Age Group Championships |
