| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Walker, Lucy E (12)
|
MRSS |
1:15.47 |
1:14.64 |
-0.83 |
| 2 |
Hardart, Annabel M (11)
|
MRBAD |
1:23.48 |
1:21.38 |
-2.10 |
| 3 |
Phillips, Leela M (12)
|
MRSS |
1:21.92 |
1:22.53 |
0.61 |
| 4 |
Gatterdam, Lyla (12)
|
MRSS |
1:21.70 |
1:26.22 |
4.52 |
| 5 |
Parasnis, Gabriella A (12)
|
MRSS |
1:27.21 |
1:27.85 |
0.64 |
| 6 |
Confalone, Elsa E (11)
|
MRBAD |
1:39.96 |
1:30.49 |
-9.47 |
| 7 |
Chtokolov, Daria D (11)
|
MRBAD |
|
1:30.99 |
- |
| 8 |
Mischka, Camilla E (12)
|
MRSS |
1:29.58 |
1:31.69 |
2.11 |
| 9 |
Mone, Anna M (11)
|
MRBAD |
1:29.47 |
1:32.08 |
2.61 |
| 10 |
Hibbert, Laura (11)
|
MRSS |
1:39.56 |
1:33.21 |
-6.35 |
| 11 |
Seidenberg, Olivia F (11)
|
MRSS |
1:38.46 |
1:36.11 |
-2.35 |
| 12 |
Blatter, Jade B (12)
|
MRSS |
1:33.43 |
1:40.40 |
6.97 |
| 13 |
Haider, Zara (12)
|
MRSS |
1:42.33 |
1:47.19 |
4.86 |