| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 2 | CRUSE, Austin | 8 | Winfield MS | NT | Unverified: |
| 3 | HANS, Lane | 7 | Black Hawk Middle School | NT | Unverified: |
| 4 | RIOS, Cesar | 7 | Elsberry Middle School | NT | Unverified: |
| 5 | STARK, Thomas | 8 | Winfield MS | NT | Unverified: |
| 6 | SANTOS, Josue | 7 | Elsberry Middle School | NT | Unverified: |
| 7 | MOORE, Kaylor | 7 | Elsberry Middle School | NT | Unverified: |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | WINDMANN, Jonathan | 8 | Wright City MS | 1:15.16 | Verified |
| 2 | WILSON, Anthony | 8 | Winfield MS | 1:13.26 | Verified |
| 3 | STAATS, Andrew | 8 | Wright City MS | 1:12.84 | Verified |
| 4 | BALL, Ethan | 8 | North Point Middle School | 1:09.03 | Verified |
| 5 | HALLEMEYER, Rylan | 8 | Silex Middle School | 1:10.88 | Verified |
| 6 | STOKES, Jackson | 7 | Winfield MS | 1:13.24 | Verified |
| 7 | ZAMACONA, Alonso | 8 | North Point Middle School | 1:14.47 | Verified |
| 8 | SEELY, Jack | 7 | Elsberry Middle School | 1:35.28 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | TWELLMAN, Lincoln | 8 | Silex Middle School | 1:08.07 | Verified |
| 2 | PIERCE, Antwain | 7 | Black Hawk Middle School | 1:04.74 | Verified |
| 3 | HEFFNER, Emery | 8 | Silex Middle School | 1:03.02 | Verified |
| 4 | PRIETO, Andre | 8 | North Point Middle School | 58.49 | Verified |
| 5 | SIMPSON, Miles | 7 | Wright City MS | 58.67 | Verified |
| 6 | WILLIAMS, Alex | 8 | North Point Middle School | 1:03.09 | Verified |
| 7 | HAMEL, Stephen | 8 | Wright City MS | 1:05.00 | Unverified: |
| 8 | SAMORA, Marcos | 7 | Black Hawk Middle School | 1:08.27 | Verified |