| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Hunter, Madeleine J (12)
|
MRLIE |
1:18.47 |
1:17.25 |
-1.22 |
| 1 |
Chin, Cassidy K (12)
|
MRFREE |
1:18.31 |
1:19.01 |
0.70 |
| 2 |
Zhang, Suri (12)
|
MRFREE |
1:18.89 |
1:19.05 |
0.16 |
| 2 |
Wangmo, Karma (12)
|
MRLGAC |
1:28.08 |
1:29.91 |
1.83 |
| 3 |
Wong, Cailin (12)
|
MRYFD |
1:19.52 |
1:19.06 |
-0.46 |
| 3 |
Fong-Causone, Sofia A (12)
|
MRYFD |
1:26.90 |
1:30.52 |
3.62 |
| 4 |
Egleston, Carys I (12)
|
MRYFD |
1:21.86 |
1:20.38 |
-1.48 |
| 4 |
O'Sullivan, Brinan K (12)
|
MRQNS |
1:31.03 |
1:31.26 |
0.23 |
| 5 |
Dojillo, Chloe (12)
|
MRVIP |
1:23.56 |
1:22.05 |
-1.51 |
| 6 |
Sciortino, Sienna B (12)
|
MRLIE |
1:24.18 |
1:22.56 |
-1.62 |
| 7 |
Katoh, Annri T (12)
|
MRYFD |
1:24.01 |
1:23.47 |
-0.54 |
| 8 |
Campusano, Fabiane (12)
|
MRBAD |
1:24.41 |
1:23.66 |
-0.75 |
| 9 |
Spodek, Sienna L (12)
|
MRYFD |
1:22.09 |
1:23.89 |
1.80 |
| 10 |
Uyanik, Alara A (12)
|
MRYFD |
1:26.35 |
1:24.92 |
-1.43 |
| 11 |
Oh, Abbigale H (12)
|
MRLIE |
1:27.71 |
1:26.48 |
-1.23 |
| 12 |
Roudnitsky, Julia (12)
|
MRMPNY |
1:23.90 |
1:27.47 |
3.57 |
| 13 |
Clarke, Hailey E (12)
|
MRLIE |
1:26.77 |
1:27.55 |
0.78 |
| 14 |
Canon, Sophia H (12)
|
MRLIE |
1:26.92 |
1:28.13 |
1.21 |
| 15 |
Vardoulias, Sofia (12)
|
MRLIE |
1:26.41 |
1:28.57 |
2.16 |
|
Scott, Fiona A (12)
|
MRBKR |
1:27.91 |
NS |
- |