| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Phelps, Anna E (9)
|
MAUN-0 |
1:19.65 |
1:19.30 |
-0.35 |
| 2 |
Collins, Ryleigh (9)
|
MAPFY |
1:24.94 |
1:28.79 |
3.85 |
| 3 |
Tassinari, Marianne E (9)
|
MAPFY |
1:28.05 |
1:32.39 |
4.34 |
| 4 |
Iacobelli, Sophia C (9)
|
MAEMAC |
1:31.24 |
1:33.12 |
1.88 |
| 5 |
Zerfass, Ava D (9)
|
MAEMAC |
|
1:34.55 |
- |
| 6 |
Lin, Simone (9)
|
MAPAAC |
1:50.92 |
1:39.04 |
-11.88 |
| 7 |
Frank, Alice C (9)
|
MAEMAC |
1:43.17 |
1:41.16 |
-2.01 |
| 8 |
Lenett, Carly A (9)
|
MAEMAC |
|
1:44.18 |
- |
| 9 |
Karnhaukhova, Anastasiya (9)
|
MAPJA |
1:58.29 |
1:49.15 |
-9.14 |
| 10 |
Settle, Ashley (9)
|
MAUNPA |
|
1:49.52 |
- |
| 11 |
Wiragh, Kendall J (9)
|
MAEMAC |
|
1:54.85 |
- |
|
Piacenti, Lily (9)
|
MAPFY |
|
DQ |
- |
|
Sadler, Cheyenne N (9)
|
MAUNAA |
2:08.40 |
DQ |
- |