| Mark | Athlete | School | Year | Meet |
|---|
| 56.69 | Taylee Chirrick | Roberts (C) | 11 | State C Championship |
| 56.84 | Jadyn VanDyken | Manhattan Christian (C) | 12 | State C Championship |
| 58.83 | Brooke Reuter | Savage (C) | 11 | State C Championship |
| 1:00.10 | Ellie Aron | Highwood (C) | 12 | State C Championship |
| 1:00.31 | Josie Brown | Saco (C) | 11 | State C Championship |
| 1:00.42 | Mia Handran | Scobey (C) | 11 | Norm Girard North/East Top 10 |
| 1:00.52 | Emily Brown | Noxon (C) | 12 | Russ Plicher Top 10 |
| 1:00.79 | Audrey Sampsen | Plentywood (C) | 11 | State C Championship |
| 1:00.94 | Aidyn Keffer | Manhattan Christian (C) | 10 | State C Championship |
| 1:00.96 | Kara Reed | Denton-Geyser-Stanford (C) | 12 | Northern C Divisional |
| 1:01.28 | Aida Cote | Charlo (C) | 11 | Western C Divisional |
| 1:01.37 | Hailey Berwick | Bainville (C) | 9 | Norm Girard North/East Top 10 |
| 1:01.66 | Bridget Reed | Turner (C) | 9 | State C Championship |