| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Tan, Shanel E (11)
|
MRQNS |
1:16.25 |
1:13.84 |
-2.41 |
| 2 |
Mendoza, Patricia Victoria G (12)
|
MRFLY |
1:15.69 |
1:15.56 |
-0.13 |
| 3 |
Karim, Azana S (12)
|
MRLGAC |
1:16.80 |
1:17.10 |
0.30 |
| 4 |
Panamserkhang, Tenzin P (12)
|
MRLGAC |
1:17.17 |
1:18.31 |
1.14 |
| 5 |
Pusing, Ava Y (12)
|
MRUN |
1:19.40 |
1:18.98 |
-0.42 |
| 6 |
Bieganowski, Maya A (12)
|
MRQNS |
1:19.61 |
1:19.46 |
-0.15 |
| 7 |
Bak, Hanna M (11)
|
MRQNS |
1:23.54 |
1:20.96 |
-2.58 |
| 8 |
Liu, Aurelia A (12)
|
MRLGAC |
1:23.93 |
1:22.08 |
-1.85 |
| 9 |
Wong, Isabella D (12)
|
MRQNS |
1:23.74 |
1:22.32 |
-1.42 |
| 10 |
Kwan, Maggie (12)
|
MRQNS |
1:24.88 |
1:23.36 |
-1.52 |
| 11 |
Tenzin, Quinci R (12)
|
MRLGAC |
1:35.27 |
1:26.19 |
-9.08 |
| 12 |
Wynn Tar-Oo, Isabella A (12)
|
MRFLY |
|
1:27.88 |
- |
| 13 |
Lengyel, Sophia (11)
|
MRQNS |
1:31.30 |
1:28.07 |
-3.23 |
| 14 |
Pattanakul, Megan (11)
|
MRQNS |
1:25.52 |
1:29.29 |
3.77 |
| 15 |
Kim, Olivia (12)
|
MRQNS |
1:33.60 |
1:30.44 |
-3.16 |
| 16 |
Colombo, Kayla M (12)
|
MRFLY |
1:39.37 |
1:31.82 |
-7.55 |
| 17 |
Lopez-Parnetti, Bianca E (12)
|
MRRA |
1:31.75 |
1:31.91 |
0.16 |
| 18 |
Ramoino, Sophia P (11)
|
MRRA |
1:30.73 |
1:34.20 |
3.47 |
| 19 |
Chun, Lina Y (12)
|
MRQNS |
1:32.98 |
1:34.80 |
1.82 |
| 20 |
Secilmis, Elisa B (11)
|
MRLGAC |
1:29.47 |
1:36.85 |
7.38 |
| 21 |
Lambros, Alethea M (11)
|
MRRA |
1:38.36 |
1:39.63 |
1.27 |
| 22 |
Cagno, Lucia P (11)
|
MRQNS |
1:40.23 |
1:40.29 |
0.06 |
| 23 |
Benjamin, Mia (11)
|
MRRA |
1:34.67 |
1:40.45 |
5.78 |
| 24 |
Dyott, Annadele S (11)
|
MRRA |
1:56.40 |
1:42.97 |
-13.43 |
| 25 |
Condon, Bronwyn A (11)
|
MRLGAC |
1:42.17 |
1:47.55 |
5.38 |