| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Siguencia, Gilian (9)
|
MRUN |
1:21.18 |
1:22.84 |
1.66 |
| 2 |
Malkowicz, Sophia C (9)
|
MRTRI |
1:25.64 |
1:23.27 |
-2.37 |
| 3 |
Bronskikh, Valeriia N (9)
|
MRFREE |
1:23.67 |
1:23.51 |
-0.16 |
| 4 |
Jorsling, Jules A (8)
|
MRBAD |
1:27.63 |
1:24.43 |
-3.20 |
| 5 |
Galimi, Maeve O (9)
|
MRWEST |
1:28.05 |
1:24.49 |
-3.56 |
| 5 |
Galang, Anniston C (9)
|
MRNYCP |
1:24.02 |
1:24.49 |
0.47 |
| 7 |
Dougherty, Emily W (9)
|
MRBAD |
1:26.99 |
1:25.15 |
-1.84 |
| 8 |
Kohner, Charlotte A (9)
|
MRLIE |
1:25.26 |
1:25.35 |
0.09 |
| 9 |
Yildiz, Chantal (8)
|
MRFREE |
1:24.77 |
1:25.91 |
1.14 |
| 10 |
Spartioti, Maria E (9)
|
MRYFD |
1:23.25 |
1:25.97 |
2.72 |
| 11 |
Suzana, Josephine (9)
|
MRAPEX |
1:30.20 |
1:26.34 |
-3.86 |
| 12 |
Curinnaia, Elena (9)
|
MRMPNY |
1:28.39 |
1:27.47 |
-0.92 |
| 13 |
Healy, Claire K (9)
|
MRYFD |
1:29.57 |
1:27.50 |
-2.07 |
| 14 |
Chevalier, Jane B (9)
|
MRBAD |
1:23.64 |
1:27.95 |
4.31 |
| 15 |
Washburn, Simone C (9)
|
MRFREE |
1:32.74 |
1:28.08 |
-4.66 |
| 16 |
Shlivko, Yuri (8)
|
MRMPNY |
1:28.87 |
1:28.13 |
-0.74 |
| 17 |
Wu, Lora W (9)
|
MRYFD |
1:32.04 |
1:30.13 |
-1.91 |
| 18 |
Rodriguez Andersen, Josefine (9)
|
MRLGAC |
1:31.48 |
1:31.34 |
-0.14 |
| 19 |
Behrend, Molly C (9)
|
MRWEST |
1:32.37 |
1:31.79 |
-0.58 |
| 20 |
Leal, Jazmine (9)
|
MRRED |
1:32.37 |
1:32.20 |
-0.17 |