| Time | Date | Name | Meet |
|---|---|---|---|
| 1:20.95 | March 9, 2022 | Smith, Hunt, Krause, Waite | NCAA Division II Championship |
| 1:21.15 | Feb. 9, 2022 | Smith, Hunt, Krause, Waite | Rocky Mountain Athletic Conference Championships |
| 1:21.85 | Nov. 20, 2021 | Kietzman, Waite, Hunt, Smith | A3 Performance Invitational |
| 1:22.06 | Feb. 17, 2021 | Smith, Scherschel, Svanda, Krause | Rocky Mountain Athletic Conference Championships |
| 1:22.09 | Feb. 13, 2020 | Scherschel, Kingsolver, Smith, Wood | Rocky Mountain Athletic Conference Championships |
| 1:22.25 | Nov. 20, 2019 | LaPrade, Kingsolver, Scherschel, Wood | A3 Performance Invitational |
| 1:22.68 | Feb. 12, 2015 | Schechter, Porter, Gertig, Pfeiffer | Rocky Mountain Athletic Conference Championships |
| 1:23.96 | Feb. 20, 2014 | Gertig, Pfeiffer, Rasmussen, Porter | Rocky Mountain Athletic Conference Championships |
| 1:24.32 | Dec. 5, 2013 | Gertig, Pfeiffer, Rasmussen, Porter | Colorado Mesa Invitational |
| 1:24.89 | Feb. 17, 2012 | Bisping, Gertig, Moore, Porter | Rocky Mountain Athletic Conference Championships |
| 1:25.17 | Feb. 16, 2012 | Gertig, Bisping, Moore, Porter | Rocky Mountain Athletic Conference Championships |
| 1:26.19 | Feb. 11, 2010 | MacIntyre, Ransom, Bisping, Dole | Rocky Mountain Athletic Conference Championship |
| 1:27.62 | Nov. 22, 2009 | Dole, Moore, MacIntyre, Bisping | Washington University Invitational |
| 1:30.60 | Oct. 24, 2009 | Ransom, Coates, Feng, Dole | Nebraska-Kearney vs. Colorado School of Mines, Morningside College |
| 1:30.61 | Oct. 17, 2009 | Wood, Moore, Bisping, Dole | Rocky Mtn Invite |
