| # | Swimmer | Team | Seed | Time | Diff |
| 1 |
Gonzalez, Emilianna (10)
|
MRAPEX |
32.30 |
33.89 |
1.59 |
| 2 |
Moran, Laura A (11)
|
MRUNAT |
31.00 |
34.25 |
3.25 |
| 3 |
Yan, Madelyn (10)
|
MRGATE |
42.43 |
35.48 |
-6.95 |
| 4 |
Finchelstein, Gabriela (10)
|
MRRIST |
44.74 |
37.71 |
-7.03 |
| 5 |
Ewald, Sydney (12)
|
MRUNAT |
36.00 |
38.05 |
2.05 |
| 6 |
Johnson, Cayla A (12)
|
MRAPEX |
42.53 |
38.37 |
-4.16 |
| 7 |
Chilton, Henrietta B (11)
|
MRGATE |
41.67 |
41.44 |
-0.23 |
| 8 |
Liriano, Maya (12)
|
MRGATE |
40.52 |
42.04 |
1.52 |
| 9 |
Vidals, Giselle (11)
|
MRAPEX |
45.30 |
42.48 |
-2.82 |
| 10 |
Lin, Angelina J (10)
|
MRGATE |
|
42.79 |
- |
| 11 |
Chun, Lina (11)
|
MRGATE |
44.14 |
42.98 |
-1.16 |
| 12 |
Kwan, Maggie (11)
|
MRUNAT |
38.00 |
44.20 |
6.20 |
| 13 |
Chen, Chiara (11)
|
MRUNAT |
43.00 |
47.83 |
4.83 |
| 14 |
Kim, Olivia (11)
|
MRGATE |
|
55.20 |
- |
| 15 |
Cagno, Lucia (10)
|
MRGATE |
45.00 |
56.16 |
11.16 |
| 16 |
Zhang, Ariel (9)
|
MRGATE |
|
57.51 |
- |
|
Eljordan, Tiffany (11)
|
MRUNAT |
37.00 |
DQ |
- |
|
Bi, Amelie (11)
|
MRUN |
|
NS |
- |