| Time | Date | Name | Meet |
|---|---|---|---|
| 3:28.18 | Feb. 15, 2020 | Oakley, Lomax, Wood, Wood | RMAC Swimming and Diving Championships |
| 3:28.71 | Feb. 8, 2017 | Wood, Berude, McComas, Kralovec | Rocky Mountain Athletic Conference Championships |
| 3:28.89 | Feb. 13, 2016 | Holloway, Berude, Wong, Kralovec | Rocky Mountain Athletic Conference Championships |
| 3:29.94 | Feb. 14, 2015 | Holloway, Kralovec, Knaebel, Erickson | Rocky Mountain Athletic Conference Championships |
| 3:36.81 | Feb. 22, 2014 | Holloway, Gallup, Pfeiffer, Kralovec | Rocky Mountain Athletic Conference Championships |
| 3:38.42 | Dec. 7, 2013 | Erickson, Holloway, Knaebel, Kralovec | Colorado Mesa Invitational |
| 3:39.28 | Feb. 16, 2013 | Pfeiffer, Wood, Hebberd, McNiff | Rocky Mountain Athletic Conference Championships |
| 3:40.43 | Feb. 18, 2012 | Wood, D'Innocenzo, Hernandez, Mick | Rocky Mountain Athletic Conference Championships |
| 3:41.85 | Feb. 12, 2011 | MAYS, Lundquist, Wood, McNiff | Rocky Mountain Athletic Conference Championships |
| 3:42.90 | Dec. 4, 2010 | MAYS, McNiff, Davidson, Lundquist | Mesa State Invitational |
| 3:46.60 | Oct. 22, 2010 | Rocky Mountain Invitational | |
| 3:46.67 | Nov. 21, 2009 | Forsling, D'Innocenzo, McNiff, McIver | Washington University Invitational |
| 4:13.37 | Nov. 7, 2009 | Reimer, McIver, D'Innocenzo, Anthony | Colorado School of Mines vs. Colorado |
| 4:15.10 | Oct. 9, 2009 | Perkins, Anthony, D'Innocenzo, Reimer | 5-way Dual (CSM, MSC, ASC, CU, MSCD) |
