| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Lister, Gwenyth E (12)
|
NISYCH |
35.95 |
34.41 |
-1.54 |
| 2 |
Pignatelli, Maria L (12)
|
NIUNAC |
34.57 |
34.81 |
0.24 |
| 3 |
Jefferis, Ilah M (12)
|
NIISWM |
41.75 |
41.21 |
-0.54 |
| 4 |
Goodreau, Josephine M (12)
|
NIISWM |
45.54 |
43.81 |
-1.73 |
| 5 |
Byrne, Charlotte M (12)
|
NIISWM |
1:07.32 |
48.89 |
-18.43 |
| 6 |
Skahen, Caroline P (11)
|
NISYCH |
52.21 |
49.66 |
-2.55 |
| 7 |
Smith, Elizabeth C (12)
|
NISYCH |
59.43 |
50.58 |
-8.85 |
| 8 |
Knapp, Riley S (11)
|
NISYCH |
50.99 |
52.07 |
1.08 |
| 9 |
Steinberg, Emma L (12)
|
NISYCH |
52.52 |
52.25 |
-0.27 |
| 10 |
Commandeur, Sophia H (12)
|
NISYCH |
|
52.91 |
- |
| 11 |
Yildirim, Sarah M (11)
|
NISYCH |
|
57.08 |
- |
|
Duell, Emma F (12)
|
NIISWM |
|
NS |
- |
|
David, Madeleine J (12)
|
NISYCH |
|
NS |
- |
|
Koch, Jolie E (12)
|
NISYCH |
45.57 |
NS |
- |