| Mark | Athlete | School | Year | Meet |
|---|
| 55.06 | Marlow Schulz | Whitefish (A) | 12 | State A |
| 55.57 | Sadi Henderson | Corvallis (A) | 12 | State A |
| 56.51 | Christina Aragon | Billings Senior (AA) | 10 | Billings Senior Quad 4/29 |
| 56.65 | Carly Smiedala | Helena (AA) | 10 | Skor-DeKam Invitational |
| 57.79 | Hailey Phillips | Plains (B) | 11 | State B |
| 58.25 | Emily Cheroske | Bigfork (B) | 12 | State B |
| 58.52 | Cierra Lamey | Beaverhead Co./Dillon (A) | 11 | State A |
| 58.73 | Josey Smiedala | Helena (AA) | 11 | State AA |
| 58.98 | Erika McLeod | Butte (AA) | 12 | Great Falls Optimist Meet |
| 59.04 | Jewlz Collins | West Yellowstone (C) | 10 | State C |
| 59.20 | Olivia Romei | Billings Senior (AA) | 9 | Eastern AA Divisional |
| 59.28 | Paige Holmes | Seeley-Swan (C) | 10 | Western C Divisional |
| 59.30 | Daniella Russell | Red Lodge (B) | 10 | State B |
| 59.62 | Tanna Holliday | Belgrade (AA) | 12 | State A |
| 59.75 | Katelyn Frost | Corvallis (A) | 11 | Sapphire Twilight Meet |
| 59.83 | Keeley Ehmann | Darby (C) | 11 | Seeley-Swan Invitational 5/10 |
| 59.86 | Anna Beck | Billings Skyview (AA) | 10 | Eastern AA Divisional |
| 59.96 | Meskerem Bradford | Bozeman (AA) | 12 | State AA |
| 1:00.00 | Morgan Sulser | Billings Senior (AA) | 12 | Billings Senior Quad 4/29 |
| 1:00.02 | Katelyn Eastburn | Dawson Co./Glendive (A) | 12 | Eastern A Divisional |
| 1:00.07 | Paige Harris | Plentywood (B) | 10 | State B |
| 1:00.20 | Syd Steele | Missoula Sentinel (AA) | 9 | Western AA Divisional |
| 1:00.54 | Tiara Duford | Polson (A) | 9 | Polson ABC Meet |
| 1:00.64 | Kendra Zander | Dawson Co./Glendive (A) | 9 | Eastern A Divisional |
| 1:00.67 | Jess Raty | Billings Senior (AA) | 10 | Eastern AA Divisional |
| 1:00.74 | Olivia Burgad | Missoula Sentinel (AA) | 10 | State AA |
| 1:00.80 | Kylie Kerkaert | Shields Valley (C) | 10 | State C |
| 1:00.85 | Madeline Orrell | Belgrade (AA) | 11 | John Tomich Invitational |
| 1:00.95 | Grace Kurtz | Whitefish (A) | 11 | State A |
| 1:01.08 | Haley Gellner | Billings Skyview (AA) | 12 | Billings City Meet |
| 1:01.11 | Ahna Kreitenger | Billings Senior (AA) | | Western AA Divisional |
| 1:01.23 | Mia Werner | Bozeman (AA) | 9 | Eastern AA Divisional |
| 1:01.40 | Trisha Carlson | Great Falls CMR (AA) | 9 | Great Falls Freshman Meet |
| 1:01.46 | Sara Anderson | Belt (C) | 9 | State C |
| 1:01.50 | Emme Warnken | Corvallis (A) | 9 | State A |
| 1:01.68 | Caitlin Hoeffner | Broadwater/Townsend (B) | 10 | State B |
| 1:01.70 | Paige Phillips | Twin Bridges (C) | | State C |
| 1:01.89 | Brielle Bumgarner | Glacier (AA) | 11 | Western AA Divisional |
| 1:01.90 | Bailee Hanson | Butte (AA) | 12 | John Tomich Invitational |
| 1:01.91 | Maja Holmquist | Frenchtown (A) | 12 | State A |
| 1:01.97 | Paitton Herbst | Baker (B) | 12 | Southern B Divisional |
| 1:01.98 | Keegan Day | Billings Skyview (AA) | 11 | Gary Benson Border Wars (WY) |