| Name | Team | Time | FINA | |||
|---|---|---|---|---|---|---|
| 1 | Brigette Eagar |
 Piranha Swimming
|
1:20.45 | 512 | PB | |
| 2 | Hannah Tietjen |
Watertown Area Swim Club
|
1:24.22 | 446 | ||
| 3 | Megan Schulte |
Watertown Area Swim Club
|
1:25.04 | 433 | ||
| 4 | Addison Bertram |
 Dakota Riptide
|
1:26.72 | 409 | ||
| 5 | Halle Kuck |
Aberdeen Swim Club
|
1:29.66 | 370 | ||