| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Spelke, Cora A (17)
|
MELRSC |
56.59 |
56.93 |
0.34 |
| 2 |
Ericson, Alexandra W (16)
|
MECMA |
59.09 |
58.91 |
-0.18 |
| 3 |
Harper, Haily A (19)
|
MELRSC |
59.58 |
1:00.73 |
1.15 |
| 4 |
Park, Jaehee (18)
|
MELRSC |
1:01.42 |
1:00.97 |
-0.45 |
| 5 |
Jorgensen, Tessa B (18)
|
MELRSC |
1:02.68 |
1:02.72 |
0.04 |
| 6 |
Van Lonkhuyzen, Sarah G (16)
|
MEPBAY |
1:06.04 |
1:03.67 |
-2.37 |
| 7 |
Trundy, Elena D (15)
|
MELRSC |
1:03.80 |
1:03.92 |
0.12 |
| 8 |
Jorgensen, Amanda N (18)
|
MELRSC |
1:03.57 |
1:04.05 |
0.48 |
| 9 |
Emmerson, Natalie B (15)
|
MELRSC |
1:03.92 |
1:04.66 |
0.74 |
| 10 |
Babikova, Issabel D (17)
|
MECMA |
1:04.91 |
1:06.22 |
1.31 |