| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Tantsyura, Eva D (12)
|
MRUN-S |
36.11 |
30.43 |
-5.68 |
| 2 |
Lennon, Caroline N (12)
|
MRFAST |
31.97 |
31.00 |
-0.97 |
| 3 |
Trieff, Lily S (12)
|
MRSS |
33.54 |
31.07 |
-2.47 |
| 4 |
Mainiero, Sophia L (12)
|
MRSS |
32.41 |
31.66 |
-0.75 |
| 5 |
Punnoose, Ann J (11)
|
MRFAST |
33.13 |
32.34 |
-0.79 |
| 6 |
O'Flaherty, Roisin (11)
|
MRSS |
36.04 |
33.13 |
-2.91 |
| 7 |
Silver, Christina M (12)
|
MRSS |
34.35 |
33.46 |
-0.89 |
| 8 |
Phillips, Maya C (12)
|
MRUN-S |
37.11 |
33.62 |
-3.49 |
| 9 |
Barabasi, Bianca R (11)
|
MRFAST |
36.40 |
34.35 |
-2.05 |
| 10 |
Skjeveland, Kira R (12)
|
MRFAST |
42.30 |
40.37 |
-1.93 |
|
Lenskis-Kristian, Michaela B (12)
|
MRFAST |
|
NS |
- |