| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sandor, Nelli (12)
|
ILIL |
1:18.96 |
1:18.24 |
-0.72 |
| 2 |
Prokos, Chloe S (12)
|
ILIL |
1:19.25 |
1:19.29 |
0.04 |
| 3 |
Hinrich, Kenzie E (12)
|
SDSD |
1:19.81 |
1:21.18 |
1.37 |
| 4 |
Eliacin, Brooke A (12)
|
ILIL |
1:20.70 |
1:21.78 |
1.08 |
| 5 |
Elzey, Aika C (12)
|
ILIL |
1:22.99 |
1:22.75 |
-0.24 |
| 6 |
Royal, Makenzie R (12)
|
MNMSI |
1:21.17 |
1:23.62 |
2.45 |
| 7 |
Tomlinson, Stella F (12)
|
ILIL |
1:22.42 |
1:23.93 |
1.51 |
| 8 |
Seemann, Clara M (11)
|
MVMV |
1:22.97 |
1:24.05 |
1.08 |
| 10 |
VerDouw, Madeline G (12)
|
NDND |
1:24.59 |
1:25.36 |
0.77 |
| 11 |
Olberding, Greta R (12)
|
MWMW |
1:24.32 |
1:25.66 |
1.34 |
| 12 |
Bradley, Macie J (11)
|
OKOK |
|
1:25.92 |
- |
| 13 |
Huehne, Kylie L (12)
|
MNMSI |
1:23.48 |
1:26.00 |
2.52 |
| 14 |
Bartula, Julia H (12)
|
ILIL |
1:22.92 |
1:26.23 |
3.31 |
| 15 |
Chandola, Alaina (12)
|
ILIL |
1:23.44 |
1:26.64 |
3.20 |
| 16 |
Richards, Brooklyn F (12)
|
NDND |
|
1:26.72 |
- |
| 17 |
Piot, Chloe S (12)
|
ILIL |
1:24.21 |
1:26.77 |
2.56 |
| 18 |
Moss, Rebecca R (12)
|
OKOK |
|
1:28.69 |
- |
| 18 |
Pokela, Naomi M (12)
|
SDSD |
|
1:28.69 |
- |
| 20 |
Inman, Leah A (11)
|
MWMW |
|
1:39.62 |
- |
| 21 |
Percifull, Abbigail H (11)
|
ARAR |
|
1:40.39 |
- |
|
Costantini, Juliana M (12)
|
ARAR |
|
NS |
- |