| Lane | Athlete | Team | Seed | Note | 
|---|---|---|---|---|
| 4 | LLERENA, Annika | Barrington-Prairie Campus | 1:20.00 | |
| 5 | HAGEN, Louisa | Lake Zurich South | 1:25.00 | 
| Lane | Athlete | Team | Seed | Note | 
|---|---|---|---|---|
| 1 | SAXINGER, Tiffany | Grayslake | 1:19.00 | |
| 2 | NEWBY, Logan | Matthews | 1:16.00 | |
| 3 | JOHNSTON, Brooke | Lake Zurich North | 1:14.60 | |
| 4 | SALWA, Maya | Hawthorn South | 1:13.90 | |
| 5 | STEUER, Annie | Lake Zurich North | 1:14.00 | |
| 6 | SPYTEK, Nicole | Hawthorn South | 1:14.80 | |
| 7 | EDWARDS, Madison | Barrington-Prairie Campus | 1:18.00 | |
| 8 | FRIDNER, Keira | Lake Zurich South | 1:20.00 | 
| Lane | Athlete | Team | Seed | Note | 
|---|---|---|---|---|
| 1 | PAKASKI, Jessica | Wauconda | 1:12.00 | |
| 2 | WISNIEWSKI, Kenna | Wauconda | 1:11.00 | |
| 3 | BROWN, Brooke | Barrington-Station Campus | 1:07.00 | |
| 4 | CHAN, Ashley | Matthews | 1:06.00 | |
| 5 | GARRELS, Colette | Barrington-Station Campus | 1:06.00 | |
| 6 | HILL, Reina | Hawthorn North | 1:09.00 | |
| 7 | WILBON, Phame | Hawthorn North | 1:11.00 | |
| 8 | VOGELER, Bella | Grayslake | 1:13.00 |