| Mark | Athlete | School | Year | Meet |
|---|
| 43.06 | Erika McLeod | Butte (AA) | 12 | Eastern AA Divisional |
| 43.21 | Morgan Sulser | Billings Senior (AA) | 12 | Eastern AA Divisional |
| 43.87 | Hailey Phillips | Plains (B) | 11 | State B |
| 45.33 | Holly Anderson | Beaverhead Co./Dillon (A) | 11 | State A |
| 45.49 | Rhiannon Sturgess | Flathead (AA) | 12 | State AA |
| 46.13 | Lexi Prevost | Sidney (A) | 12 | State A |
| 46.33 | Hannah King | Choteau (B) | 10 | Northern B Divisional |
| 46.36 | Alexa Arthun | Manhattan (B) | 9 | State B |
| 46.38 | Josey Smiedala | Helena (AA) | 11 | State AA |
| 46.48 | Paige Holmes | Seeley-Swan (C) | 10 | Western C Divisional |
| 46.64 | Brittney Marosok | Billings West (AA) | 10 | Eastern AA Divisional |
| 46.75 | Aubry Bair | Broadwater/Townsend (B) | 11 | State B |
| 46.86 | Hannah Coburn | Missoula Big Sky (AA) | 10 | Greg Rice City Meet |
| 47.00 | Sophia Stiles | Malta (B) | 9 | 2B Districts |
| 47.15 | Julia Zidack | Bozeman (AA) | 10 | State AA |
| 47.25 | Megan Hawkins | Park/Livingston (A) | 12 | Central A Divsional |
| 47.28 | Phoebe Guercio | Whitefish (A) | 12 | Northwestern A Divisional |
| 47.31 | Courtney Carl | Missoula Big Sky (AA) | 11 | Western AA Divisional |
| 47.43 | Kyra Fisher | Belgrade (AA) | 11 | Central A Divsional |
| 47.48 | Alyssa Jonasen | Great Falls (AA) | 11 | State AA |
| 47.52 | Taya DeFrance | Harrison (C) | 10 | State C |
| 47.59 | Josie D Agostino | Bozeman (AA) | 10 | State AA |
| 47.65 | Sarai McCollaum | Darby (C) | 12 | State C |
| 47.70 | Janessa Williams | Jefferson/Boulder (B) | 11 | State B |
| 47.87 | Aspen Runkel | Charlo (C) | 12 | Thompson Falls Invitational |
| 47.89 | Hailee Bennett | Glacier (AA) | 10 | Western AA Divisional |
| 47.99 | Matti McAnally | Bigfork (B) | 10 | State B |
| 48.12 | Brynn McChesney | Glacier (AA) | 9 | Class A Invitational |
| 48.18 | Katelyn Farmer | Missoula Hellgate (AA) | 11 | Greg Rice City Meet |
| 48.24 | Courtney Stromme | Belgrade (AA) | 12 | Frenchtown Invitational 4/17 |
| 48.30 | Mikaela Grove | Highwood (C) | 12 | State C |
| 48.34 | Mariah Stoltz | Valier (C) | 10 | Northern C Divisional |
| 48.40 | Carla Nicosia | Columbia Falls (A) | 11 | Northwestern A Divisional |
| 48.71 | Madison Wheeler | Polson (A) | 9 | Northwestern A Divisional |
| 48.72 | Haley Gellner | Billings Skyview (AA) | 12 | Skyview Triangular 5/10 |