| Mark | Athlete | School | Year | Meet |
|---|
| 43.50 | Hailey Phillips | Plains (B) | 12 | State B |
| 44.39 | Hailey Copinga | Billings Skyview (AA) | 12 | State AA |
| 44.87 | Morgan Evans | Great Falls (AA) | 10 | State AA |
| 45.26 | Hannah Coburn | Missoula Big Sky (AA) | 11 | State AA |
| 45.36 | Holly Andersen | Beaverhead Co./Dillon (A) | 12 | Southwestern A Divisional |
| 45.40 | Alexa Arthun | Manhattan (B) | 10 | Belgrade Quad |
| 45.71 | Ahna Kreitinger | Glacier (AA) | 10 | State AA |
| 45.91 | Alyssa Jonasen | Great Falls (AA) | 12 | State AA |
| 46.14 | Aubry Bair | Broadwater/Townsend (B) | 12 | State B |
| 46.23 | Josey Smiedala | Helena (AA) | 12 | Skor-DeKam Invitational |
| 46.37 | Courtney Carl | Missoula Big Sky (AA) | 12 | Western AA Divisional |
| 46.63 | Maysee Whitney | Billings Senior (AA) | 9 | State AA |
| 46.66 | Julia Zidack | Bozeman (AA) | 11 | State AA |
| 46.77 | Sophia Stiles | Malta (B) | 10 | State B |
| 46.89 | Jewlz Collins | West Yellowstone (C) | 11 | State C |
| 46.91 | Allie Schulz | Whitefish (A) | 11 | Northwestern A Divisional |
| 46.93 | Caitlyn Farmer | Missoula Hellgate (AA) | 12 | State AA |
| 47.19 | Danielle Devlin | Great Falls (AA) | 9 | State AA |
| 47.48 | Hannah King | Choteau (B) | 11 | State B |
| 47.49 | Anna Christman | Three Forks (B) | 12 | State B |
| 47.49 | Megan Pendergast | Stevensville (A) | 9 | State A |
| 47.68 | Taya DeFrance | Harrison (C) | 11 | State C |
| 47.71 | Mattison McAnnaly | Bigfork (A) | 11 | State B |
| 47.72 | Elsa Sveen | Bozeman (AA) | 10 | State AA |
| 47.74 | Janessa Williams | Jefferson/Boulder (B) | 12 | State B |
| 47.84 | Tessa Burke | Loyola Sacred Heart (B) | 9 | 6B Districts |
| 47.92 | Jaley Wyse | Dawson Co./Glendive (A) | 9 | State A |
| 47.92 | Jaley Wyse | Dawson Co./Glendive (A) | 9 | State A |
| 47.92 | Sara Anderson | Belt (C) | 10 | State C |
| 48.05 | Shelby Philipps | Great Falls CMR (AA) | 10 | Great Falls Crosstown Meet |
| 48.34 | Josie D Agostino | Bozeman (AA) | 11 | Eastern AA Divisional |
| 48.36 | Carla Nicosia | Columbia Falls (A) | 12 | Northwestern A Divisional |
| 48.46 | Syd Steele | Missoula Sentinel (AA) | 10 | State AA |
| 48.46 | Alexis Taulbee | Florence-Carlton (B) | 10 | State B |
| 48.46 | Kailee Stoppel | Billings West (AA) | 9 | Billings City Meet |
| 48.49 | Elena Carter | Helena Capital (AA) | 9 | Western Top 10 Meet |
| 48.56 | Kyra Fisher | Belgrade (AA) | 12 | Midland Roundtable Top 10 |
| 48.78 | Kelsey Gillespie | Flathead (AA) | 10 | Western AA Divisional |
| 48.78 | Carrie Cota | Roundup (B) | 11 | State B |
| 48.85 | Ellie DeWan | Whitefish (A) | 9 | State A |
| 48.94 | Shey Hannum | Thompson Falls (B) | 11 | 7B Districts |
| 48.94 | Mariah Stoltz | Valier (C) | 11 | Northern C Divisional |
| 49.18 | Sierra Durbin | Judith Gap-Moore (C) | 9 | State C |
| 49.23 | Kaitlyn Bird | Fort Benton (C) | 10 | Northern C Divisional |