| Mark | Athlete | School | Year | Meet |
|---|
| 12.19 | Quinlyn Simmons | Helena (AA) | 9 | Helena/Big Sky/Hellgate Tri |
| 12.27 | Kaydance Reiter | Havre (A) | 12 | Golden Eagle Invite |
| 12.31 | Emery Peel | Billings Senior (AA) | 11 | Billings City Meet |
| 12.35 | Isabella Donaghey | Gallatin (Bozeman) (AA) | 11 | Billings Invite |
| 12.36 | Sofia Szollosi | Missoula Hellgate (AA) | 12 | Helena/Big Sky/Hellgate Tri |
| 12.38 | Alayna Hurd | Billings West (AA) | 12 | Billings City Meet |
| 12.38 | Regan Torgerson | Shelby (B) | 10 | Northern B Divisional |
| 12.42 | Kaimea Dalke | Shepherd (B) | 11 | 4B District Meet |
| 12.42 | Kaitlyn Dantic | Laurel (A) | 12 | Laurel Opener |
| 12.43 | Macy Brandon | Havre (A) | 11 | Golden Eagle Invite |
| 12.45 | Cori Coombe | Joliet (B) | 12 | Beartooth Invite |
| 12.47 | Delainey Engen | Billings West (AA) | 12 | Senior/Gallatin/West Triangular |
| 12.47 | Demry Boyd | Billings West (AA) | 11 | Billings City Meet |
| 12.49 | Sophia Berry | Loyola Sacred Heart (B) | 10 | Western B/C Divisional |
| 12.52 | Rachael Wilmot | Whitefish (A) | 12 | Russ Plicher Western Top 10 |
| 12.56 | Scotland Jones | Bozeman (AA) | 11 | Eastern AA Divisional |
| 12.58 | Hazel Bishop | Helena (AA) | 11 | Helena/Big Sky/Hellgate Tri |
| 12.58 | Etta Wicks | Fort Benton (C) | 11 | Golden Eagle Invite |
| 12.59 | Cambry Conradsen | Savage (C) | 12 | Sidney Small Invite |
| 12.60 | Mayiehl Shaw | Belgrade (AA) | 12 | Belgrade Open |
| 12.60 | Jillian Huls | Corvallis (A) | 11 | Ravalli County Invitational |
| 12.60 | Avery Gerdes | Huntley Project (B) | 11 | Al Walker Memorial Meet |
| 12.61 | Nora Allen | Billings West (AA) | 10 | Senior/Gallatin/West Triangular |
| 12.61 | Audrey Thelen | Belgrade (AA) | 11 | Belgrade Open |
| 12.65 | Blythe Armstrong | Fergus/Lewistown (A) | 11 | Golden Eagle Invite |
| 12.65 | Alivia Rinehart | Flathead (AA) | 12 | Kalispell Time Trials |
| 12.68 | Anneliese Bessette | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 12.70 | Ela Harber | Havre (A) | 11 | Eastern A Divisional |
| 12.71 | Isabella Grutsch | Missoula Big Sky (AA) | 12 | Western AA Divisional |
| 12.75 | Madigan Hurlbert | Florence-Carlton (B) | 10 | Ravalli County Invitational |
| 12.75 | Myley Bronaugh | Billings Skyview (AA) | 11 | Billings City Meet |
| 12.78 | Averi Riedel | Fairview (B) | 10 | 2B District Meet |
| 12.79 | Hosnya Ayidomihou | Helena Capital (AA) | 11 | Helena Crosstown Meet |
| 12.79 | Ali Doyle | Turner (C) | 10 | 9C District Meet |
| 12.79 | Macee May | Havre (A) | 12 | Havre High Lion's Invite |
| 12.82 | Carleigh Mahn | Billings West (AA) | 9 | Yellowstone Bank Freshman Meet |
| 12.83 | Scarlet Harris | Great Falls (AA) | 10 | Great Falls/Skyview Dual |
| 12.83 | Sydney Sprenger | Shepherd (B) | 9 | Yellowstone Bank Freshman Meet |
| 12.84 | Blake Hardy | Frenchtown (A) | 10 | Hamilton Bronc Invitational |
| 12.85 | Ally Jacques | Fort Benton (C) | 10 | Northern C Divisional |
| 12.86 | Camy Hoiland | Anaconda (B) | 12 | Western B/C Divisional |
| 12.87 | Maya Noble | Three Forks (B) | 10 | 5B/12C District Meet |
| 12.90 | Amelia Stene | Polson (A) | 10 | Whitefish ARM Invitational |
| 12.91 | Zeila Wagner | Glacier (AA) | 11 | Western AA Divisional |
| 12.91 | Montannah Piar | Granite/Philipsburg (C) | 12 | KLH Memorial Track Meet |
| 12.92 | Destinee Goodman | Belt (C) | 10 | Mustang Invite |
| 12.93 | Reagan Johnstone | Stevensville (A) | 9 | Corvallis JV Invitational |
| 12.95 | Ella Varner | Corvallis (A) | 11 | Western A Divisional |
| 12.98 | Lilly Ferris | Fort Benton (C) | 9 | Northern C Divisional |
| 12.99 | Addie Falls Down | Billings Senior (AA) | 12 | Dan Hansen Invitational (WY) |
| 12.99 | Jolee Klempel | Richey-Lambert (C) | 10 | Eastern C Divisional |
| 12.99 | Harper Dirk | Great Falls (AA) | 10 | Great Falls/Bozeman Dual |
| 13.00 | Fayth Clarno | Beaverhead Co./Dillon (A) | 12 | Western A Divisional |
| 13.02 | Sophia Hutchison | Stevensville (A) | 11 | Western A Divisional |
| 13.02 | Farah Wyche | Corvallis (A) | 12 | Western A Divisional |
| 13.02 | Brinley Skaggs | Florence-Carlton (B) | 9 | Western B/C Divisional |
| 13.02 | Mckinleigh Doherty | Jefferson/Boulder (B) | 9 | 5B/12C District Meet |
| 13.03 | Elsie Wilson | Bainville (C) | 12 | 2C District Meet |
| 13.04 | Ginger Bergland | Whitefish (A) | 9 | Whitefish ARM Invitational |
| 13.04 | Perri Sloan | Custer Co./Miles City (A) | 10 | Eastern A Divisional |
| 13.04 | Jacquie Etchart | Billings Senior (AA) | 11 | Billings City Meet |
| 13.05 | Sierra Wilcox | Shields Valley (C) | 9 | John Cheek Top 8 Track Meet |
| 13.06 | Addy Lorash | Columbus (B) | 12 | Southern B/C Divisional |
| 13.06 | Ella Claunch | Billings West (AA) | 10 | Senior/Gallatin/West Triangular |
| 13.06 | Dylann Bartoletti | Butte (AA) | 12 | Western AA Divisional |
| 13.06 | Taleah Wilson | Belgrade (AA) | 12 | Belgrade Open |
| 13.06 | Bryn Fitzgerald | Billings West (AA) | 9 | Billings City Meet |
| 13.08 | Carly Buxbaum | Fairview (B) | 12 | 2B District Meet |
| 13.08 | Aubrey Korst | Hamilton (A) | 11 | Ravalli County Invitational |
| 13.09 | Charley Nissen | Chinook (B) | 8 | Havre High Lion's Invite |
| 13.11 | Mia Carrell | Helena (AA) | 12 | Helena Crosstown Meet |
| 13.11 | Brie Mattson | Chester-Joplin-Inverness (C) | 10 | Mustang Invite |
| 13.13 | Shiloh Fisher | Valley Christian (C) | 9 | Western B/C Divisional |
| 13.13 | Kaitlyn Noyes | Broadwater/Townsend (B) | 11 | Frenchtown Invite |
| 13.15 | Claire Townsend | Billings West (AA) | 10 | Senior/Gallatin/West Triangular |