| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 1 | PINDERSKI, Zachary | 7 | Winston | 1:29.30 | |
| 2 | STARK, Sullivan | 7 | Walter R. Sundling | 1:13.48 | |
| 3 | HOUSE, Alex | 7 | Sandburg (Rolling Meadows) | 1:09.59 | |
| 4 | LI, Bryden | 7 | Plum Grove | 1:03.88 | |
| 5 | SZCZYGIEL, Adam | 7 | Sandburg (Rolling Meadows) | 1:04.00 | |
| 6 | CRANE, Henry | 7 | Walter R. Sundling | 1:10.96 | |
| 7 | ENGELBRECHTSEN, Max | 7 | Plum Grove | 1:15.00 | |
| 8 | COURTNEY, Aiden | 7 | Winston | 1:18.70 | 
| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 2 | SUTHAR, Drew | 7 | Sandburg (Rolling Meadows) | 1:21.69 | |
| 3 | VOZAS, Ryan | 7 | Plum Grove | 1:20.00 | |
| 4 | GATSIS, Christopher | 7 | Walter R. Sundling | 1:18.13 | |
| 5 | MAJURY, Braeden | 7 | Plum Grove | 1:19.00 | |
| 6 | JAKIMIUK, Adam | 7 | Walter R. Sundling | 1:21.60 |