| Mark | Athlete | School | Year | Meet |
|---|
| 55.52 | Olivia Lewis | Corvallis (A) | 12 | State A Championship |
| 56.26 | Taylee Chirrick | Roberts (C) | 12 | 6C Districts |
| 57.14 | Brooke Zetooney | Whitefish (A) | 12 | State A Championship |
| 57.56 | Avery Gerdes | Huntley Project (B) | 10 | Southern B Divisional |
| 57.70 | Brooke Reuter | Savage (C) | 12 | Glendive Shriners Invitational |
| 57.82 | Madilyn Todorovich | Helena (AA) | 11 | State AA Championship |
| 57.83 | Rachael Wilmot | Whitefish (A) | 11 | State A Championship |
| 58.24 | Macy Brandon | Havre (A) | 10 | State A Championship |
| 58.32 | Josie Brown | Saco (C) | 12 | Eastern C Divisional |
| 58.44 | Peyton Frame | Custer Co./Miles City (A) | 10 | State A Championship |
| 58.92 | Annalise Lewis | Hamilton (A) | 9 | State A Championship |
| 59.06 | Mia Handran | Scobey (C) | 12 | State C Championship |
| 59.08 | Hazel Bishop | Helena (AA) | 10 | Helena Crosstown Meet |
| 59.09 | Isabel Ross | Gallatin (Bozeman) (AA) | 11 | Eastern AA Divisional |
| 59.22 | Avery Eckert | Manhattan (B) | 10 | 5B Districts |
| 59.31 | Kaitlyn Dantic | Laurel (A) | 11 | Eastern A Divisional |
| 59.32 | Hailey Ells | Whitefish (A) | 12 | State A Championship |
| 59.41 | Sophia Miller | Missoula Hellgate (AA) | 12 | State AA Championship |
| 59.51 | Ireland Johnston | Loyola Sacred Heart (B) | 11 | State B Championship |
| 59.52 | Anneliese Bessette | Missoula Hellgate (AA) | 11 | Big Sky Triangular 4/9 |
| 59.57 | Aliyah Vogel | Billings West (AA) | 10 | State AA Championship |
| 59.79 | Ally Sempf | Columbia Falls (A) | 12 | Archie Roe Invitational |
| 59.93 | Bailey Kroeker | Florence-Carlton (B) | 9 | Western B Divisional |
| 59.94 | Kaitlyn Skinner | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 1:00.06 | Taylor Evans | Conrad (B) | 12 | Cascade Top 8 Meet |
| 1:00.10 | Grace Stewart | Belgrade (AA) | 12 | State AA Championship |
| 1:00.20 | Heather Haskins | Frenchtown (A) | 11 | State A Championship |
| 1:00.23 | Isis Haslem | Great Falls (AA) | 12 | Great Falls Optimist Meet |
| 1:00.32 | Zoey Bortz | Flathead (AA) | 11 | State AA Championship |
| 1:00.37 | Phoenix Hyland | Missoula Hellgate (AA) | 9 | Greg Rice City Meet |
| 1:00.38 | Sophia Berry | Loyola Sacred Heart (B) | 9 | 6B Districts |
| 1:00.49 | Mia Swartz | Missoula Sentinel (AA) | 9 | Western AA Divisional |
| 1:00.54 | Reghan Skogen | Helena (AA) | 12 | Western AA Divisional |
| 1:00.57 | Blythe Armstrong | Fergus/Lewistown (A) | 10 | Eastern A Divisional |
| 1:00.58 | Breanna Smith | Missoula Sentinel (AA) | 10 | Sentinel Triangular 3/26 |
| 1:00.71 | Alex Bonini | Billings West (AA) | 10 | Eastern AA Divisional |
| 1:00.78 | Vannie Urick | Belt (C) | 9 | Northern C Divisional |
| 1:00.80 | Jenna Ellis | Hamilton (A) | 10 | Russ Plicher Western Top 10 |
| 1:00.85 | Kourtney Grossman | Billings West (AA) | 12 | Midland Roundtable Top 10 |
| 1:00.87 | Shaylee Soule | Helena Capital (AA) | 11 | Western AA Divisional |
| 1:00.88 | Bridget Reed | Turner (C) | 10 | Northern C Divisional |
| 1:00.93 | Grace Curnow | Billings West (AA) | 11 | Bozeman Quad |
| 1:00.93 | Cambry Conradsen | Savage (C) | 11 | Eastern C Divisional |
| 1:00.99 | Dacia Benkelman | Glacier (AA) | 10 | State AA Championship |
| 1:01.02 | Carmen Eddy | Glacier (AA) | 11 | Russ Plicher Western Top 10 |
| 1:01.16 | Michaela Cary | East Helena (A) | 12 | Eastern A Divisional |
| 1:01.18 | Grace Gall | Flathead (AA) | 9 | Last Chance Quad |
| 1:01.18 | Gwendalyn Clingan | Belgrade (AA) | 11 | State AA Championship |
| 1:01.20 | Dani Jordan | Lockwood (A) | 11 | Eastern A Divisional |
| 1:01.21 | Isabella Donaghey | Gallatin (Bozeman) (AA) | 10 | Eastern AA Divisional |
| 1:01.26 | Shaylee Quenzer | Red Lodge (B) | 12 | Southern B Divisional |
| 1:01.36 | Abby Boyd | Melstone (C) | 9 | State C Championship |
| 1:01.42 | Saraya Afrank | Baker (B) | 12 | State B Championship |
| 1:01.44 | Leela Ormsby | Billings Senior (AA) | 11 | State AA Championship |
| 1:01.45 | Aubrey Winter | Columbus (B) | 11 | Red Lodge Invitational |
| 1:01.46 | Kadynce Sperry | Missoula Big Sky (AA) | 12 | Western AA Divisional |
| 1:01.49 | Ella Moodry | Butte Central (A) | 12 | Joe Tacke Invitational |
| 1:01.54 | Shae Gooden | Frenchtown (A) | 11 | John Tomich Invitational |
| 1:01.58 | Bella Triemstra | Manhattan Christian (C) | 11 | State C Championship |
| 1:01.74 | Allison Gama | Loyola Sacred Heart (B) | 9 | 6B Districts |
| 1:01.76 | Aley Aller | Sweet Grass Co./Big Timber (B) | 12 | State B Championship |
| 1:01.76 | Grace Jagodzinski | Billings Central (A) | 9 | State A Championship |
| 1:01.78 | Hailey Berwick | Bainville (C) | 10 | Norm Girard North/East Top 10 |
| 1:01.80 | Morgan Taylor | Shepherd (B) | 10 | Southern B Divisional |
| 1:01.85 | Emma Buckley | Dawson Co./Glendive (A) | 10 | Glendive Shriners Invitational |
| 1:01.86 | Larkin Galle | Anaconda (B) | 12 | State B Championship |
| 1:01.90 | Regan Torgerson | Shelby (B) | 9 | Archie Roe Invitational |