| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Peng, Isabel C (12)
|
PNOCA |
58.03 |
58.01 |
-0.02 |
| 2 |
McDonald, Sydney A (11)
|
ORHEAT |
59.62 |
58.54 |
-1.08 |
| 3 |
Murphy, Rowan R (12)
|
ORHEAT |
1:00.93 |
1:00.80 |
-0.13 |
| 4 |
Boardman, Mena (11)
|
ORPAC |
58.08 |
1:01.21 |
3.13 |
| 5 |
Tobaru, Mayuko (12)
|
PNOCA |
1:01.22 |
1:01.66 |
0.44 |
| 6 |
Coffield, Catherine A (12)
|
ORPAC |
1:01.92 |
1:01.69 |
-0.23 |
| 7 |
Derr, Opal A (12)
|
ORPAC |
1:03.85 |
1:01.85 |
-2.00 |
| 8 |
Nguyen, Lily V (11)
|
ORPAC |
1:02.05 |
1:02.36 |
0.31 |
| 9 |
Wright, Eleanor K (12)
|
OROCST |
1:01.20 |
1:02.59 |
1.39 |
| 10 |
Dunn, Emily N (12)
|
PNOCA |
1:04.05 |
1:04.00 |
-0.05 |
| 11 |
Sufuentes, Stela A (11)
|
ORPAC |
1:03.30 |
1:04.22 |
0.92 |
| 12 |
Pena, Averyl J (11)
|
OROCST |
1:05.01 |
1:04.41 |
-0.60 |
| 12 |
Cupo-Carleton, Anna Grace (11)
|
ORTEAM |
1:04.93 |
1:04.41 |
-0.52 |
| 14 |
Irani, Delana (11)
|
PNOCA |
1:07.17 |
1:04.50 |
-2.67 |
| 15 |
Sim, Yuni L (12)
|
ORTEAM |
1:07.14 |
1:04.56 |
-2.58 |
| 16 |
Chechitelli, Jamie M (11)
|
PNOCA |
1:05.66 |
1:05.32 |
-0.34 |
| 17 |
Stoffer, Brooke K (12)
|
ORHEAT |
1:06.38 |
1:06.24 |
-0.14 |
| 18 |
Reeves, Devon O (11)
|
OROCST |
1:04.02 |
1:06.51 |
2.49 |
| 19 |
Howard, Sydney M (12)
|
ORGOLD |
1:06.83 |
1:08.14 |
1.31 |
| 20 |
Maya, Ana V (11)
|
ORGOLD |
1:09.37 |
1:08.91 |
-0.46 |
| 21 |
Oh, Yunseul L (11)
|
ORGOLD |
1:10.06 |
1:09.65 |
-0.41 |
| 22 |
Ashton, Olivia L (12)
|
ORTEAM |
1:10.41 |
1:09.84 |
-0.57 |
| 23 |
Bickford, Violet E (12)
|
OROCST |
1:11.50 |
1:09.97 |
-1.53 |
| 24 |
Jin, Katie D (12)
|
ORGOLD |
1:10.10 |
1:10.66 |
0.56 |
| 25 |
Park, Yeha (11)
|
ORGOLD |
1:09.86 |
1:10.92 |
1.06 |
| 26 |
Czarnecki, Sylvia R (12)
|
ORTEAM |
1:11.13 |
1:12.30 |
1.17 |
| 27 |
Foster, Kori E (12)
|
ORHEAT |
1:29.28 |
1:12.51 |
-16.77 |
| 28 |
Noce, Sabrina A (12)
|
OROCST |
1:12.23 |
1:13.49 |
1.26 |
| 29 |
Yingsel, Tenzin (11)
|
ORHEAT |
1:16.34 |
1:13.86 |
-2.48 |
| 30 |
Piquette, Claire L (11)
|
ORTEAM |
1:23.99 |
1:22.99 |
-1.00 |