| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 1 | Breese (Central) | A | Vetter | Attaway | Schiefer | Jansen | 1:40.96 | |
| 2 | Wood River (East Alton-W.R.) | A | Skinner | Lane | Marshall | Burch | 1:38.84 | |
| 3 | Rochester | A | Bruce | Pletsch | Olson | Hobson | 1:35.24 | |
| 4 | Springfield (Sacred Heart-Griffin) | A | Sanders | Stewart | Lott | Davis | 1:34.80 | |
| 5 | Highland | A | Fridley | Ward | Nimmo | Miller | 1:34.84 | |
| 6 | Taylorville | A | Lehman | Coady | Adams | Rahar | 1:38.64 | |
| 7 | Greenville | A | Baum | Fassold | Redding | Green | 1:40.89 |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 1 | Roxana | A | Wells | Wieneke | Osmoe | McBride | 1:33.68 | |
| 2 | Jacksonville (H.S.) | A | Reed | Armstrong | Armstrong | Mitchell | 1:32.02 | |
| 3 | Cahokia (H.S.) | A | Baxtron | Deloach | Moore | Pennington | 1:29.87 | |
| 4 | East St. Louis (Sr.) | A | Cross | Wren | Smith | Buchanon | 1:28.63 | |
| 5 | Troy (Triad) | A | Darby | Crockarell | Warren | Yohannes | 1:29.57 | |
| 6 | Springfield (Lanphier) | A | Holmes | Robinson | Haliberton | Brown-Sanchez | 1:31.44 | |
| 7 | Springfield (Southeast) | A | Edwards | Walker | Kanu | Turner | 1:33.11 | |
| 8 | Jerseyville (Jersey) | A | Judkins | Talley | Jones | Borkowski | DNF |