| Mark | Athlete | School | Year | Meet |
|---|
| 56.30 | Olivia Lewis | Corvallis (A) | 11 | State A Championship |
| 56.69 | Taylee Chirrick | Roberts (C) | 11 | State C Championship |
| 56.84 | Jadyn VanDyken | Manhattan Christian (C) | 12 | State C Championship |
| 57.06 | Brooke Zetooney | Whitefish (A) | 11 | State A Championship |
| 57.82 | Claire Hutchison | Stevensville (A) | 12 | Russ Plicher Top 10 |
| 58.28 | Madilyn Todorovich | Helena (AA) | 10 | Western AA Divisional |
| 58.44 | Ally Sempf | Columbia Falls (A) | 11 | State A Championship |
| 58.45 | Avery Gerdes | Huntley Project (B) | 9 | State B Championship |
| 58.57 | Hazel Bishop | Helena (AA) | 9 | State AA Championship |
| 58.71 | Carly Cook | Laurel (A) | 12 | Eastern A Divisional |
| 58.76 | Olivia Collins | Gallatin (Bozeman) (AA) | 12 | Skor DeKam Invite |
| 58.83 | Brooke Reuter | Savage (C) | 11 | State C Championship |
| 58.94 | Isabel Ross | Gallatin (Bozeman) (AA) | 10 | Eastern AA Divisional |
| 59.09 | Rachael Wilmot | Whitefish (A) | 10 | Last Chance Triangular |
| 59.11 | Hailey Burger | Helena Capital (AA) | 11 | State AA Championship |
| 59.42 | Ireland Johnston | Loyola Sacred Heart (B) | 10 | State B Championship |
| 59.47 | Makenzie Sheils | Columbus (B) | 12 | State B Championship |
| 59.59 | Hailey Ells | Whitefish (A) | 11 | Whitefish ARM Invitational |
| 59.61 | Breanna Smith | Missoula Sentinel (AA) | 9 | Sentinel Invitational |
| 59.68 | Alexis Brauer | Billings Skyview (AA) | 12 | Billings Public City Meet |
| 59.92 | Brynn Brower | Billings Skyview (AA) | 10 | State AA Championship |
| 59.97 | Ashlyn Graham | Gallatin (Bozeman) (AA) | 12 | Bozeman Triangular |
| 1:00.10 | Ellie Aron | Highwood (C) | 12 | State C Championship |
| 1:00.13 | Hope Madill | Great Falls CMR (AA) | 11 | State AA Championship |
| 1:00.23 | Peyton Walker | Flathead (AA) | 12 | Last Chance Triangular |
| 1:00.25 | Alyse Aby | Laurel (A) | 12 | Eastern A Divisional |
| 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 |
| 1:00.46 | Rylee Boltz | Libby (A) | 12 | Lincoln County Meet |
| 1:00.49 | Jenna Ellis | Hamilton (A) | 9 | Russ Plicher Top 10 |
| 1:00.51 | Ruby Lorenz | Missoula Sentinel (AA) | 12 | Western AA Divisional |
| 1:00.52 | Emily Brown | Noxon (C) | 12 | Russ Plicher Top 10 |
| 1:00.62 | Payton Grover | Billings Senior (AA) | 11 | Billings Public City Meet |
| 1:00.67 | Macy Brandon | Havre (A) | 9 | State A Championship |
| 1:00.70 | Kourtney Grossman | Billings West (AA) | 11 | State AA Championship |
| 1:00.79 | Audrey Sampsen | Plentywood (C) | 11 | State C Championship |
| 1:00.79 | Leela Ormsby | Billings Senior (AA) | 10 | Butte-Senior Dual |
| 1:00.81 | Emma Kirkhart | Great Falls (AA) | 12 | Great Falls Crosstown Dual |
| 1:00.90 | Aley Aller | Sweet Grass Co./Big Timber (B) | 11 | State B Championship |
| 1:00.94 | Malea Egan | Colstrip (B) | 12 | 3B Districts |
| 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 |
| 1:00.96 | Sophia Miller | Missoula Hellgate (AA) | 11 | Archie Roe Invitational |
| 1:01.00 | Ela Bloyder | Billings West (AA) | 12 | Eastern AA Divisional |
| 1:01.07 | Halle Haber | Billings West (AA) | 11 | West-Skyview Dual |
| 1:01.15 | Kadynce Sperry | Missoula Big Sky (AA) | 11 | Big Sky-Butte Dual |
| 1:01.25 | Aliyah Vogel | Billings West (AA) | 9 | West-Skyview Dual |
| 1:01.25 | Cori Coombe | Joliet (B) | 10 | Harlo/Park City Invite |
| 1:01.28 | Aida Cote | Charlo (C) | 11 | Western C Divisional |
| 1:01.30 | Bailey Wride | Flathead (AA) | 12 | Western AA Divisional |
| 1:01.36 | Shaylee Soule | Helena Capital (AA) | 10 | Helena Crosstown Meet |
| 1:01.37 | Hailey Berwick | Bainville (C) | 9 | Norm Girard North/East Top 10 |
| 1:01.43 | Isis Haslem | Great Falls (AA) | 11 | Great Falls Crosstown Dual |
| 1:01.46 | Mikenna Conan | Flathead (AA) | 11 | Western AA Divisional |
| 1:01.46 | Kameryn Ketcham | Sweet Grass Co./Big Timber (B) | 11 | 5B Districts |
| 1:01.54 | Brooklyn Ludemann | Missoula Big Sky (AA) | 11 | Big Sky-Butte Dual |
| 1:01.59 | Claire Rutherford | Gallatin (Bozeman) (AA) | 10 | Bozeman Crosstown Dual |
| 1:01.65 | Heather Haskins | Frenchtown (A) | 10 | State A Championship |
| 1:01.66 | Bridget Reed | Turner (C) | 9 | State C Championship |
| 1:01.71 | Kaitlyn Skinner | Missoula Hellgate (AA) | 11 | MCPS Invite |
| 1:01.72 | Layla Baumann | Billings West (AA) | 12 | Billings Central Invite |
| 1:01.78 | Taylor Evans | Conrad (B) | 11 | Northern B Divisional |
| 1:01.80 | Kennady Garvin | Glacier (AA) | 10 | Western AA Divisional |
| 1:01.84 | Dani Jordan | Lockwood (A) | 10 | John Polich Invitational |
| 1:01.97 | Peyton Frame | Custer Co./Miles City (A) | 9 | Eastern A Divisional |