| Mark | Athlete | School | Year | Meet |
|---|
| 56.90 | Carly Smiedala | Helena (AA) | 12 | Western AA Divisional |
| 57.04 | Christina Aragon | Billings Senior (AA) | 12 | Butte Invite |
| 58.00 | Trisha Carlson | Great Falls CMR (AA) | 11 | Eastern AA Divisionals |
| 58.10 | Alex Veltkamp | Manhattan Christian (C) | 10 | Western C Divisonal |
| 58.29 | Paige Harris | Plentywood (B) | 12 | State C |
| 58.52 | Pipi Eitel | Belgrade (AA) | 11 | Helena Gt. Falls Belgrade |
| 58.68 | Annie Hill | Glacier (AA) | 10 | Western AA Divisional |
| 58.69 | Jewlz Collins | West Yellowstone (C) | 12 | State C |
| 58.80 | Kim Parsell | Shelby (B) | 12 | MHSA Class B Championships |
| 58.93 | Leah Gannon | Fort Benton (C) | 9 | State C |
| 59.02 | Anna Beck | Billings Skyview (AA) | 12 | State AA |
| 59.11 | Madeline Hamilton | Missoula Sentinel (AA) | 11 | State AA |
| 59.34 | Payton Durocher | Choteau (B) | 11 | MHSA Class B Championships |
| 59.36 | Olivia Burgad | Missoula Sentinel (AA) | 12 | State AA |
| 59.55 | Haile Norred | Bigfork (A) | 10 | Archie Roe Invitational |
| 59.68 | Madison Liechty | Missoula Sentinel (AA) | 12 | State AA |
| 59.81 | Alex Bohlman | Seeley-Swan (C) | 11 | State C |
| 59.87 | Alexa Arthun | Manhattan (B) | 11 | Butte Invite |
| 59.89 | Madison Patrick | Park/Livingston (A) | 11 | MidLand Round Table Top Ten |
| 1:00.14 | Lydia Kryshak | Whitefish (A) | 10 | ABC Invitational |
| 1:00.23 | Lily Mercer | Seeley-Swan (C) | 9 | State C |
| 1:00.30 | Tiahna Vladic | Billings Senior (AA) | 9 | Billings Public Schools City Meet |
| 1:00.45 | Claire Fickler | Drummond (C) | 11 | State C |
| 1:00.47 | Ally Martin | Harlowton (C) | 11 | State C |
| 1:00.52 | Maddie Brockel | Billings West (AA) | 10 | Helena Skor/DeKam Invitational |
| 1:00.68 | Sydney Blain | Billings Senior (AA) | 10 | Eastern AA Divisionals |
| 1:00.71 | Heidi Nisly | Corvallis (A) | 11 | MHSA Class A Championships |
| 1:00.73 | Danielle Devlin | Great Falls (AA) | 10 | Eastern AA Divisionals |
| 1:00.75 | Caitlin Hoeffner | Broadwater/Townsend (B) | 12 | MHSA Class B Championships |
| 1:00.76 | Mattison McAnaly | Bigfork (A) | 12 | MHSA Class B Championships |
| 1:00.76 | Maggie Smiedala | Helena (AA) | 10 | Helena Gt. Falls Belgrade |
| 1:00.79 | Brenna Beckett | Broadview-Lavina (C) | 12 | Southern C Divisional Meet |
| 1:00.81 | Hannah Collins | Great Falls (AA) | 11 | Eastern AA Divisionals |
| 1:00.84 | Penny Jessop | Corvallis (A) | 11 | Western A Divisionals |
| 1:00.87 | Elsa Sveen | Bozeman (AA) | 11 | MidLand Round Table Top Ten |
| 1:00.90 | Ahna Kreitinger | Glacier (AA) | 11 | Western AA Divisional |
| 1:00.94 | Kaitlin Wride | Flathead (AA) | 10 | Flathead-Whitefish Dual |
| 1:00.95 | Mariah Wittman | Billings Central (A) | 12 | John Polich Cowgirl/Cowboy Invitational Track Meet |
| 1:00.99 | Taylor Ludwig | Laurel (A) | 11 | MHSA Class A Championships |
| 1:01.17 | Bailey Smith | Glacier (AA) | 11 | Flathead vs. Glacier |
| 1:01.18 | Alex Simensen | Glasgow (B) | 12 | MHSA Class B Championships |
| 1:01.29 | Scotti Robinson | Baker (B) | 11 | MHSA Class B Championships |
| 1:01.29 | Bailey Peterson | Westby-Grenora (C) | 11 | Eastern C Divisional |
| 1:01.33 | Ashley Revis | Arlee (C) | 10 | District 14C |
| 1:01.35 | Brooke Endy | Billings West (AA) | 12 | Billings West Quad 4/12 |
| 1:01.53 | Lindsten Hook | Bozeman (AA) | 10 | GREAT FALLS OPTIMIST CLUB WOMENS INVITATIONAL TRACK MEET |
| 1:01.56 | Maysee Whitney | Billings Senior (AA) | 10 | Butte Invite |
| 1:01.79 | Jessica Raty | Billings Senior (AA) | 12 | Eastern AA Divisionals |
| 1:01.83 | Lauren Schulz | Whitefish (A) | 9 | Western A Divisionals |
| 1:01.91 | Madelyn Mariegard | Helena (AA) | 9 | Western Top 10 Meet |
| 1:01.96 | Jaree Mane | Fergus/Lewistown (A) | 12 | Eastern A Super Divisionals |
| 1:01.98 | Savannah Stern | Choteau (B) | 11 | MHSA Class B Championships |
| 1:02.00 | Autumn Round | Florence-Carlton (B) | 11 | MHSA Class B Championships |
| 1:02.00 | Bryn Morley | Bigfork (A) | 10 | Eureka Invitational |