| Mark | Athlete | School | Year | Meet |
|---|
| 56.90 | Carly Smiedala | Helena (AA) | 12 | Western AA Divisional |
| 57.04 | Christina Aragon | Billings Senior (AA) | 12 | Butte Invite |
| 58.00 | Trisha Carlson | Great Falls CMR (AA) | 11 | Eastern AA Divisionals |
| 58.52 | Pipi Eitel | Belgrade (AA) | 11 | Helena Gt. Falls Belgrade |
| 58.68 | Annie Hill | Glacier (AA) | 10 | Western AA Divisional |
| 59.02 | Anna Beck | Billings Skyview (AA) | 12 | State AA |
| 59.11 | Madeline Hamilton | Missoula Sentinel (AA) | 11 | State AA |
| 59.36 | Olivia Burgad | Missoula Sentinel (AA) | 12 | State AA |
| 59.68 | Madison Liechty | Missoula Sentinel (AA) | 12 | State AA |
| 1:00.30 | Tiahna Vladic | Billings Senior (AA) | 9 | Billings Public Schools City Meet |
| 1:00.52 | Maddie Brockel | Billings West (AA) | 10 | Helena Skor/DeKam Invitational |
| 1:00.68 | Sydney Blain | Billings Senior (AA) | 10 | Eastern AA Divisionals |
| 1:00.73 | Danielle Devlin | Great Falls (AA) | 10 | Eastern AA Divisionals |
| 1:00.76 | Maggie Smiedala | Helena (AA) | 10 | Helena Gt. Falls Belgrade |
| 1:00.81 | Hannah Collins | Great Falls (AA) | 11 | Eastern AA Divisionals |
| 1:00.87 | Elsa Sveen | Bozeman (AA) | 11 | MidLand Round Table Top Ten |
| 1:00.90 | Ahna Kreitinger | Glacier (AA) | 11 | Western AA Divisional |
| 1:00.94 | Kaitlin Wride | Flathead (AA) | 10 | Flathead-Whitefish Dual |
| 1:01.17 | Bailey Smith | Glacier (AA) | 11 | Flathead vs. Glacier |
| 1:01.35 | Brooke Endy | Billings West (AA) | 12 | Billings West Quad 4/12 |
| 1:01.53 | Lindsten Hook | Bozeman (AA) | 10 | GREAT FALLS OPTIMIST CLUB WOMENS INVITATIONAL TRACK MEET |
| 1:01.56 | Maysee Whitney | Billings Senior (AA) | 10 | Butte Invite |
| 1:01.79 | Jessica Raty | Billings Senior (AA) | 12 | Eastern AA Divisionals |
| 1:01.91 | Madelyn Mariegard | Helena (AA) | 9 | Western Top 10 Meet |