| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Johnston, Sabrina K (17)
|
MRBGNW |
53.49 |
56.99 |
3.50 |
| 2 |
Guzzino, Mary Grace S (16)
|
MRBGNW |
58.51 |
59.80 |
1.29 |
| 3 |
Pryne, Jenna M (17)
|
MRPAC |
57.67 |
1:00.19 |
2.52 |
| 4 |
Chung, Zoe E (15)
|
MRBGNW |
57.68 |
1:02.93 |
5.25 |
| 5 |
Naughton, Kiera H (15)
|
MRBGNW |
1:00.85 |
1:03.61 |
2.76 |
| 6 |
Lee, Lea (16)
|
MRPAC |
1:01.77 |
1:03.75 |
1.98 |
| 7 |
Nadecki, Grace K (17)
|
MRBGNW |
1:02.36 |
1:04.11 |
1.75 |
| 8 |
Joyce, Margaret K (15)
|
MRBGNW |
1:01.16 |
1:04.73 |
3.57 |
| 9 |
Chan, Caroline H (16)
|
CTGRYM |
1:04.26 |
1:05.99 |
1.73 |
| 10 |
White, Sienna R (15)
|
MRBGNW |
1:06.88 |
1:07.50 |
0.62 |
| 11 |
Storch, Rebecca H (16)
|
MRPAC |
1:09.75 |
1:09.16 |
-0.59 |
| 12 |
Kim, Elaine (16)
|
MRPAC |
1:09.63 |
1:09.77 |
0.14 |
| 13 |
Sun, Julia (16)
|
MRBGNW |
1:08.39 |
1:09.79 |
1.40 |
| 14 |
Williams, Laura A (16)
|
MRBGNW |
1:09.83 |
1:11.73 |
1.90 |
| 15 |
Tassier, Katherine A (15)
|
MRBGNW |
1:09.32 |
1:12.96 |
3.64 |
| 16 |
Fagan, Paige C (16)
|
MRBGNW |
1:06.98 |
1:13.34 |
6.36 |
|
Appelbaum, Talya B (16)
|
CTGRYM |
|
NS |
- |