| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 2 | Harrisburg | A | Scaggs | King | Brimm | Keener | 2:05.03 |
| 3 | Benton | A | Minor | Wills | Johnson | Kinkade | 1:58.81 |
| 4 | Carterville | A | Levins | Williamson | Ragan | Booker | 1:56.82 |
| 5 | Metropolis (Massac County) | A | Gower | Hillebrand | Hansen | Cox | 1:57.43 |
| 6 | Salem | A | Cape | Donoho | Pizarro | Robinson | 2:03.38 |
| 7 | Anna (A.-Jonesboro) | A | Miller | Clay | Loomis | Mix | 2:05.67 |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 1 | Mt. Carmel | A | Swanson | Wankel | Harrington | McCorkle | DQ |
| 2 | Herrin (H.S.) | A | Kerrigan | Mann | Pickles | Harrison | 1:51.46 |
| 3 | Marion (H.S.) | A | Ankrom | Greer | Kelly | Williams | 1:49.83 |
| 4 | Mt. Vernon (H.S.) | A | Dixon | Johnson | Delatore | Pollard | 1:48.20 |
| 5 | Mascoutah | A | Lowe | Love | Waddell | Schneider | 1:48.45 |
| 6 | Waterloo (H.S.) | A | Zweigart | Springer | Barringer | Starek | 1:50.15 |
| 7 | Carbondale | A | Miller | Hamilton | Adams | Penn | 1:52.16 |
| 8 | Freeburg | A | Trentman | Rowden | Trentman | Geluck | 1:56.74 |