| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 1 | GALLO, Gabe | 8 | Sandburg (Rolling Meadows) | 1:10.00 | |
| 2 | CHATTERJEE, Rohin | 8 | Winston | 1:08.40 | |
| 3 | DHOOPER, Dev | 8 | Walter R. Sundling | 1:04.64 | |
| 4 | JOHNSON, Dylan | 8 | Plum Grove | 1:00.00 | |
| 5 | LOPEZ, Sebastian | 8 | Winston | 1:03.50 | |
| 6 | NELSON, James | 7 | Plum Grove | 1:05.00 | |
| 7 | SHOULTS, Patrick | 8 | Walter R. Sundling | 1:08.84 | |
| 8 | PURI, Anit | 8 | Sandburg (Rolling Meadows) | 1:12.00 | 
| Lane | Athlete | Yr. | Team | Seed | Note | 
|---|---|---|---|---|---|
| 1 | CASBARIAN, Nathan | 8 | Walter R. Sundling | 1:19.03 | |
| 2 | CASACCIO, Max | 8 | Walter R. Sundling | 1:14.24 | |
| 3 | MOI, Tyler | 8 | Winston | 1:12.10 | |
| 4 | HO, Matthew | 8 | Plum Grove | 1:08.78 | |
| 5 | MITTAL, Mantra | 8 | Plum Grove | 1:09.53 | |
| 6 | THRALL, Ben | 8 | Winston | 1:12.80 | |
| 7 | FOSTER, Malik | 8 | Sandburg (Rolling Meadows) | 1:15.00 |