| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 3 | McMahon, Deirdre | JR | Glenbrook North High School | 1:10.00 | Unverified: |
| 4 | Shah, Aishy | JR | Niles West High School | 1:07.46 | Verified |
| 5 | Varghese, Jeslyn | FR | Niles West High School | 1:08.84 | Verified |
| Lane | Athlete | Yr. | Team | Seed | Note |
|---|---|---|---|---|---|
| 1 | Gioia, Morgan | SO | Maine South High School | 1:07.00 | Unverified: |
| 2 | Gerber, Daphna | SR | Glenbrook South High School | 1:04.34 | Verified |
| 3 | Nelson, Hayden | JR | Glenbrook South High School | 1:02.24 | Verified |
| 4 | Ryan, Abby | JR | New Trier High School | 1:01.97 | Verified |
| 5 | Okereke, Jacklynn | JR | Evanston Township High School | 1:02.00 | Unverified: |
| 6 | Lu, Michelle | JR | New Trier High School | 1:02.68 | Unverified: CSL Tri @ NT |
| 7 | Sandlow, Natalie | SR | Glenbrook North High School | 1:05.50 | Unverified: |