| Time | Date | Name | Meet |
|---|---|---|---|
| 55.48 | Dec. 8, 2023 | Preston Kwon | Speedo Winter Junior Championship West |
| 55.73 | Dec. 10, 2021 | Tavner Wisdom | Speedo Winter Junior Championship West |
| 56.30 | June 4, 2021 | Tavner Wisdom | Alaska Junior Olympic Championships |
| 56.97 | Nov. 20, 2020 | Tavner Wisdom | Alaska State HS Club Invitational |
| 57.21 | Dec. 7, 2018 | Caleb Law | Speedo Winter Junior Championships - West |
| 57.50 | March 18, 2017 | Jake Simmons | Speedo Champions Series - Western - Federal Way |
| 1:00.60 | Jan. 29, 2017 | Jake Simmons | AK LSC Senior Championships |
| 1:01.01 | April 24, 2016 | Ryan Emili | Alaska Junior Olympic Championships |
| 1:01.19 | March 10, 2010 | Jeff Frey | Speedo Champions Series - Federal Way |
| 1:02.00 | Jan. 28, 2007 | Josh Yoo | Speedo Great Alaska Open |
| 1:02.09 | Feb. 27, 2004 | Dan Van Hees | Speedo Senior Region XIV Great Alaska Open |
| 1:07.33 | Dec. 5, 2003 | Josh Yoo | AK Age Group Championships |
| 1:07.34 | Feb. 23, 2001 | JEREMY ULDRICH | AK LSC SENIOR CHAMPIONSHIP |
| 1:14.21 | Dec. 1, 2000 | Chance Gray | AK Age Group Championships |
