| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Brown, Sophia V (12)
|
PVMACH |
|
1:21.17 |
- |
| 2 |
Ellison, Sophie E (12)
|
PVMACH |
1:19.62 |
1:21.89 |
2.27 |
| 3 |
Murphy, Caroline E (12)
|
PVMAKO |
1:21.32 |
1:22.57 |
1.25 |
| 4 |
Shum, Monet A (12)
|
PVPM |
1:23.82 |
1:22.78 |
-1.04 |
| 5 |
Stukus, Aleena J (11)
|
PVMACH |
1:34.16 |
1:23.66 |
-10.50 |
| 6 |
Enkhbold, Oyu (12)
|
PVPM |
1:27.09 |
1:28.00 |
0.91 |
| 7 |
Charbonneau, Allie M (12)
|
PVMAKO |
1:26.50 |
1:29.77 |
3.27 |
| 8 |
Haryanto, Karolina M (12)
|
PVMACH |
|
1:31.65 |
- |
| 9 |
Waugh, Olivia F (11)
|
PVMACH |
1:32.21 |
1:32.65 |
0.44 |
| 10 |
Boggs, Jasmine L (11)
|
PVBWST |
1:45.80 |
1:33.18 |
-12.62 |
| 11 |
Fish, Lillianne E (12)
|
PVPM |
1:28.72 |
1:33.46 |
4.74 |
| 12 |
Spar, Frances B (11)
|
PVPM |
|
1:35.49 |
- |
| 13 |
Gomez, Elena (11)
|
PVPM |
|
1:37.00 |
- |
| 14 |
Batjargal, Naska (12)
|
PVBWST |
1:35.65 |
1:43.71 |
8.06 |
|
Charters, Hannah M (12)
|
PVMACH |
1:25.16 |
NS |
- |
|
Adavelly, Shruti (12)
|
PVPM |
|
NS |
- |