| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Sabol, Mackinzie I (12)
|
MRBGNW |
30.57 |
30.58 |
0.01 |
| 2 |
Lin, Orly A (12)
|
MRUN |
33.48 |
32.93 |
-0.55 |
| 3 |
Garretson, Phoebe N (11)
|
MRPAC |
33.83 |
32.94 |
-0.89 |
| 4 |
O'Donnell, Katherine A (12)
|
MRBGNW |
32.35 |
33.03 |
0.68 |
| 5 |
Valenzuela, Isabel A (12)
|
MRBGNW |
37.42 |
33.61 |
-3.81 |
| 6 |
Callaghan, Brigid M (12)
|
MRBGNW |
36.20 |
33.82 |
-2.38 |
| 7 |
Masella, Alexandra V (11)
|
MRMAKO |
35.00 |
35.54 |
0.54 |
| 8 |
Figliola, Lucille W (12)
|
MRBGNW |
38.44 |
36.97 |
-1.47 |
| 9 |
Zecar, Ivana M (11)
|
MRUN |
35.65 |
38.02 |
2.37 |
| 10 |
Ross, Ashley T (12)
|
MRBGNW |
36.03 |
39.17 |
3.14 |
| 11 |
Riccio, Allison J (11)
|
MRPAC |
44.15 |
40.92 |
-3.23 |
| 12 |
Lane, Caroline G (11)
|
MRBGNW |
45.03 |
44.45 |
-0.58 |
|
Riley, Kira M (11)
|
MRPAC |
1:03.20 |
DQ |
- |