| Lane | # | Athlete | Age | Team | Seed | Note |
|---|---|---|---|---|---|---|
| 1 | 440 | BHANDARI, NIESHA KIM | 16 | Chij St. Nicholas Girls' | NT | |
| 2 | 266 | WEE, GABRIELLE | 16 | Chij Secondary (Toa Payoh) | NT | |
| 3 | 500 | GANESAN, LAJITHANI | 17 | National Junior College | 1:16.00 | |
| 4 | 656 | KOH, JIA EN SIERRA | 16 | St Anthony Canossian | 1:10.00 | |
| 5 | 653 | BINTE AIDIL, ALEENA ELSA | 16 | St Anthony Canossian | 1:10.00 | |
| 6 | 496 | GOH, MEGAN | 17 | National Junior College | 1:17.00 | |
| 7 | 263 | TAN, KIT KAYE | 16 | Chij Secondary (Toa Payoh) | NT | |
| 8 | 338 | LI, JIAYI CHRISTINA | 16 | JS Athletics | NT |