| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Wargo, Reagan J (7)
|
MRYBAR |
46.01 |
47.16 |
1.15 |
| 2 |
Vybihal, Anna C (8)
|
MRYBAR |
45.89 |
47.53 |
1.64 |
| 3 |
Colley, Lola F (8)
|
MRNBS |
52.36 |
49.84 |
-2.52 |
| 4 |
DiBenedetto, Milania A (8)
|
MRPATS |
52.49 |
51.16 |
-1.33 |
| 5 |
Olsen, Maeve D (7)
|
MRYBAR |
58.33 |
55.16 |
-3.17 |
| 6 |
McKenna, Colette (8)
|
MRMHHW |
|
57.38 |
- |
| 7 |
Constancio, Anya M (7)
|
MRNBS |
1:01.06 |
1:00.46 |
-0.60 |
| 8 |
LaVallee, Paige (8)
|
MRMWDA |
|
1:04.30 |
- |
| 9 |
Lazarski, Zofia R (8)
|
MRNBS |
1:05.78 |
1:04.42 |
-1.36 |
| 10 |
Mouligneau, Ingrid F (8)
|
MRNDAC |
1:20.11 |
1:05.68 |
-14.43 |
| 11 |
LaRosa, Alexandra S (7)
|
MRYBAR |
1:16.89 |
1:08.26 |
-8.63 |
| 12 |
Kavanagh, Josie M (7)
|
MRNBS |
1:03.72 |
1:10.61 |
6.89 |
| 13 |
Scott, Nadia L (6)
|
MRPBAC |
|
1:11.01 |
- |
| 14 |
Butler, Annabelle L (7)
|
MRNBS |
1:09.27 |
1:12.04 |
2.77 |
|
Arbeit-Yerkes, Juniper (8)
|
MRPATS |
|
DQ |
- |
|
Murtha, Alexandria (8)
|
MRMWDA |
|
DQ |
- |
|
Rodriguez, Gabriella C (8)
|
MRNBS |
1:06.47 |
NS |
- |