| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Pastushan, Alex L (17)
|
CTNCY |
57.00 |
59.16 |
2.16 |
| 2 |
Haley, Samantha M (14)
|
CTNCY |
1:04.12 |
1:03.94 |
-0.18 |
| 3 |
Mascarinas, Skylar E (16)
|
CTNCY |
1:02.85 |
1:04.31 |
1.46 |
| 4 |
Dunn, Lily M (14)
|
CTNCY |
1:03.08 |
1:04.76 |
1.68 |
| 5 |
El Hattab, Nermine A (16)
|
CTNCY |
1:03.66 |
1:08.10 |
4.44 |
| 6 |
Xia, Elizabeth (16)
|
CTUN |
1:01.20 |
1:08.92 |
7.72 |
| 7 |
Cheung, Emma B (15)
|
CTNCY |
1:09.89 |
1:09.22 |
-0.67 |
| 8 |
Peloso, Emma L (14)
|
CTNCY |
1:03.93 |
1:10.11 |
6.18 |
| 9 |
Carrillo, Alexa A (17)
|
CTNCY |
1:11.30 |
1:12.10 |
0.80 |
| 10 |
Jisl, Katarina P (16)
|
CTNCY |
1:12.36 |
1:13.00 |
0.64 |
| 11 |
Williams, Emma A (14)
|
CTNCY |
1:08.88 |
1:13.12 |
4.24 |
| 12 |
Lee, Skylar A (15)
|
CTNCY |
1:10.34 |
1:13.36 |
3.02 |
| 13 |
Johansson, Eve P (16)
|
CTNCY |
1:17.02 |
1:15.92 |
-1.10 |