| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 2 | Lindbergh High School | A | 1:45.15 | Unverified: | ||||
| 3 | Chaminade College Preparatory Sc | A | Birschbach | Keller | Lierman | Watson | 1:40.30 | Unverified: Rams Mini Meet |
| 4 | St. Louis University High School | A | 1:41.66 | Unverified: |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed | Note |
|---|---|---|---|---|---|---|---|---|
| 1 | Ritenour High School | A | Harris | Kadima | Mitchell | Strickland | 1:39.00 | Unverified: |
| 2 | Ladue Horton Watkins High School | A | 1:38.53 | Unverified: | ||||
| 3 | Mehlville High School | A | Cody | Lee | Scott | Shelton | 1:36.50 | Verified |
| 4 | DeSmet Jesuit High School | A | Ashe | Stewart | Smith | Smith | 1:38.20 | Unverified: |
| 5 | Webster Groves High School | A | Miller | Rohrs | Peel | Miller | 1:38.83 | Unverified: |
| 6 | Kirkwood High School | A | Potter | Wallace | McKee | Boswinkel | 1:40.00 | Unverified: |
