| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Paez, Isabella S (17)
|
MRBGNW |
59.39 |
58.15 |
-1.24 |
| 2 |
Alexander, Sinceraty D (17)
|
MRBGNW |
57.45 |
58.36 |
0.91 |
| 3 |
Wohl, Katharine A (18)
|
MRBGNW |
1:00.26 |
1:02.70 |
2.44 |
| 4 |
Raath, Ella (17)
|
MRBGNW |
1:00.74 |
1:03.84 |
3.10 |
| 5 |
McIntyre, Savannah Y (16)
|
MRBGNW |
1:04.18 |
1:04.11 |
-0.07 |
| 6 |
Desiderio, Sarah P (17)
|
MRBGNW |
|
1:05.24 |
- |
| 7 |
Patterson, Clare M (16)
|
MRBGNW |
1:05.21 |
1:07.82 |
2.61 |
| 8 |
Sun, Julia (15)
|
MRBGNW |
1:09.98 |
1:08.25 |
-1.73 |
| 9 |
Tello, Lizette (16)
|
MRBGNW |
1:10.78 |
1:09.03 |
-1.75 |
|
Johnston, Sabrina K (16)
|
MRBGNW |
54.61 |
NS |
- |
|
Kung, Annabelle D (15)
|
MRBGNW |
58.72 |
NS |
- |