| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Zhu, Serena (8)
|
MRWEST |
48.57 |
50.78 |
2.21 |
| 2 |
Lindberg, Campbell R (8)
|
MRJCCT |
53.82 |
54.36 |
0.54 |
| 3 |
Nguyen, Celie E (8)
|
MRJCCT |
|
55.49 |
- |
| 4 |
O'Donnell, Alice C (7)
|
MRBKR |
1:02.67 |
1:00.24 |
-2.43 |
| 5 |
Broccoli, Luccianna G (8)
|
MREAST |
1:10.00 |
1:01.98 |
-8.02 |
| 6 |
Martinez Santos, Meyali (8)
|
MRMHHW |
1:04.44 |
1:06.99 |
2.55 |
| 7 |
Weinstein, Emma J (5)
|
MRWEST |
|
1:07.05 |
- |
| 8 |
Koh, Vivian A (6)
|
MRPAC |
1:22.54 |
1:15.29 |
-7.25 |
|
Convery, Amelia R (7)
|
MRGAEL |
1:31.07 |
DQ |
- |
|
Killinger, Anna T (7)
|
MRJCCT |
|
DQ |
- |
|
Skolnik-Weil, Estella R (8)
|
MRJCCT |
|
DQ |
- |
|
O'Keefe, Brynne M (8)
|
MRGAEL |
1:02.65 |
NS |
- |