| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Udomsilp, Natalie (11)
|
MRLGAC |
44.34 |
43.35 |
-0.99 |
| 2 |
Beleffi, Bianca (12)
|
MRLGAC |
44.27 |
44.71 |
0.44 |
| 3 |
Qiu, Mia (12)
|
MRHYB |
55.84 |
45.04 |
-10.80 |
| 4 |
Belcher, Victoria E (11)
|
MRHYB |
58.33 |
45.10 |
-13.23 |
| 5 |
Ostuni, Lia P (12)
|
MRHYB |
43.39 |
45.25 |
1.86 |
| 6 |
Wegener, Alma (12)
|
MRHYB |
50.47 |
45.93 |
-4.54 |
| 7 |
Callanan, Ciara M (12)
|
MRLGAC |
44.38 |
46.72 |
2.34 |
| 8 |
Solly, Amaris (11)
|
MRFLY |
|
46.86 |
- |
| 9 |
Fraczek, Matylda (11)
|
MRLGAC |
46.93 |
47.95 |
1.02 |
| 10 |
Graham, Calliope L (11)
|
MRRED |
59.55 |
48.20 |
-11.35 |
| 11 |
Hahn, Alison M (12)
|
MRHYB |
50.42 |
48.69 |
-1.73 |
| 12 |
Shneerson, Ilona (12)
|
MRRED |
50.58 |
49.37 |
-1.21 |
| 13 |
Cortes Morales, Mariana (11)
|
MRHYB |
50.51 |
49.45 |
-1.06 |
| 14 |
Prevatt- Dillah, Amelia N (12)
|
MRRED |
52.26 |
50.19 |
-2.07 |
| 15 |
Feledy, Sophia R (11)
|
MRHYB |
52.49 |
51.63 |
-0.86 |
| 16 |
Stratton, Charlotte S (12)
|
MRHYB |
57.67 |
55.87 |
-1.80 |
| 17 |
Kass, Sandra F (11)
|
MRHYB |
|
55.99 |
- |
| 18 |
Briggs, Clara I (11)
|
MRRED |
1:00.09 |
1:01.38 |
1.29 |
|
Looi, Denise (12)
|
MRCIY |
44.77 |
DQ |
- |
|
O'Sullivan, Brinan K (12)
|
MRLGAC |
41.82 |
DQ |
- |
|
Mani, Veda (12)
|
MRCIY |
52.17 |
NS |
- |