| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Kwan, Maggie (11)
|
MRUNAT |
38.50 |
37.40 |
-1.10 |
| 2 |
Gonzalez, Emilianna (10)
|
MRAPEX |
36.94 |
38.76 |
1.82 |
| 3 |
Moran, Laura A (11)
|
MRUNAT |
39.00 |
39.61 |
0.61 |
| 4 |
Finchelstein, Gabriela (10)
|
MRRIST |
43.23 |
40.97 |
-2.26 |
| 5 |
Lazarev, Deborah (11)
|
MRRIST |
40.81 |
41.13 |
0.32 |
| 6 |
Salazar, Emily A (11)
|
MRAPEX |
40.92 |
41.53 |
0.61 |
| 7 |
Ewald, Sydney (12)
|
MRUNAT |
39.00 |
42.96 |
3.96 |
| 8 |
Lin, Angelina J (10)
|
MRGATE |
|
43.39 |
- |
| 9 |
Yan, Madelyn (10)
|
MRGATE |
47.98 |
43.43 |
-4.55 |
| 10 |
Lengyel, Sophia (10)
|
MRRIST |
46.36 |
43.53 |
-2.83 |
| 11 |
Eljordan, Tiffany (11)
|
MRUNAT |
41.00 |
44.03 |
3.03 |
| 12 |
Bi, Amelie (11)
|
MRUN |
|
44.85 |
- |
| 13 |
Chilton, Henrietta B (11)
|
MRGATE |
47.48 |
46.57 |
-0.91 |
| 14 |
Zhang, Erica A (11)
|
MRGATE |
45.38 |
46.73 |
1.35 |
| 15 |
Liriano, Maya (12)
|
MRGATE |
44.82 |
46.80 |
1.98 |
| 16 |
Chun, Lina (11)
|
MRGATE |
46.84 |
47.70 |
0.86 |
| 17 |
Baran, Joanna (10)
|
MRUNAT |
53.00 |
48.98 |
-4.02 |
| 18 |
Chamla, Alicia (10)
|
MRRIST |
55.19 |
49.40 |
-5.79 |
| 18 |
Cagno, Lucia (10)
|
MRGATE |
48.00 |
49.40 |
1.40 |
| 20 |
Remor, Rachel (8)
|
MRRIST |
52.23 |
49.65 |
-2.58 |
| 21 |
Chen, Chiara (11)
|
MRUNAT |
48.00 |
49.86 |
1.86 |
| 22 |
Vidals, Giselle (11)
|
MRAPEX |
53.74 |
50.73 |
-3.01 |
| 23 |
Kim, Olivia (11)
|
MRGATE |
|
52.75 |
- |
|
Zhang, Ariel (9)
|
MRGATE |
|
DQ |
- |