| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Reveron, Victoria (13)
|
FGEA |
1:08.23 |
1:06.41 |
-1.82 |
| 2 |
De Angulo, Alexandra C (14)
|
FGMS |
1:06.96 |
1:10.02 |
3.06 |
| 3 |
Lydecker, Sidney I (13)
|
FGMCDA |
1:09.47 |
1:11.69 |
2.22 |
| 4 |
Orellana, Sophia (13)
|
FGMCDA |
1:24.91 |
1:18.49 |
-6.42 |
| 5 |
Arnedo, Angelina K (13)
|
FGNMST |
1:28.43 |
1:24.10 |
-4.33 |
| 6 |
Montalvo, Victoria A (14)
|
FGCANE |
1:27.89 |
1:24.25 |
-3.64 |
| 7 |
Estrada, Dasha S (13)
|
FGNMST |
1:22.50 |
1:25.03 |
2.53 |
| 8 |
Otero, Abril A (13)
|
FGOSC |
1:34.33 |
1:26.84 |
-7.49 |
| 9 |
Stromeyer, Valentina A (13)
|
FGMS |
1:22.59 |
1:27.74 |
5.15 |
| 10 |
Concha, Mariafe (14)
|
FGOSC |
1:29.84 |
1:28.99 |
-0.85 |
| 11 |
Sheppard, Madeline E (10)
|
FGAJSC |
1:51.77 |
1:48.64 |
-3.13 |
| 12 |
Montalvo, Bianca (10)
|
FGCANE |
|
1:51.04 |
- |
| 13 |
Goron, Sasha C (10)
|
FGCANE |
1:51.96 |
1:57.18 |
5.22 |
|
Montalvo, Emma (10)
|
FGCANE |
2:05.01 |
DQ |
- |
|
Cimring, Gabriella J (10)
|
FGCANE |
1:53.53 |
NS |
- |
|
Scullin, Priscilla L (13)
|
FGCANE |
|
NS |
- |