| Time | Date | Name | Meet |
|---|---|---|---|
| 1:19.23 | Nov. 16, 2023 | Sampson, Kiszczak, McEnaney, Patterson | TYR Colorado Mesa Invitational |
| 1:20.05 | Nov. 18, 2021 | Sampson, Austin, Elkady, D'Orsi | A3 Performance Invitational |
| 1:20.27 | Feb. 17, 2021 | Sampson, Austin, D'Orsi, Durin | Rocky Mountain Athletic Conference Championships |
| 1:20.54 | Nov. 20, 2019 | Minano, ELGAYAR, Austin, Vallee | A3 Performance Invitational |
| 1:20.69 | Feb. 8, 2017 | Hirsch, Radomski, Bean, Berg | Rocky Mountain Athletic Conference Championships |
| 1:21.63 | Feb. 20, 2014 | Olsen-Stavrakas, Hastings, Eisendrath, Scheuermann | Rocky Mountain Athletic Conference Championships |
| 1:22.77 | Feb. 14, 2013 | El Hazzaz, O'Connell, Szekely, Eisendrath | Rocky Mountain Athletic Conference Championships |
| 1:22.92 | Nov. 20, 2011 | O'Connell, Walton, Szekely, Dahlen | Colorado Mesa University Invitational |
| 1:24.31 | Feb. 10, 2011 | White, Matthiessen, Eisendrath, Stavrakas | Rocky Mountain Athletic Conference Championships |
| 1:26.28 | Dec. 5, 2010 | Stavrakas, White, Matthiessen, Eisendrath | Mesa State Invitational |
| 1:27.45 | Oct. 23, 2010 | Rocky Mountain Invitational | |
| 1:29.00 | Feb. 11, 2010 | Strehlow, MacDonald, Pahler, FLEMMING | Rocky Mountain Athletic Conference Championship |
