| Mark | School | Meet |
|---|
| 48.28 | Billings West (AA) | Midland Roundtable Top 10 |
| 48.81 | Havre (A) | Nelson-Thomas ABC Meet |
| 49.01 | Missoula Hellgate (AA) | Archie Roe Invitational |
| 49.09 | Billings Senior (AA) | Midland Roundtable Top 10 |
| 49.10 | Corvallis (A) | Nelson-Thomas ABC Meet |
| 49.32 | Helena (AA) | Helena Crosstown Meet |
| 49.57 | Whitefish (A) | Whitefish ARM Invitational |
| 49.58 | Belgrade (AA) | Eastern AA Divisional |
| 49.59 | Loyola Sacred Heart (B) | Corvallis Quadrangular |
| 49.67 | Gallatin (Bozeman) (AA) | Last Chance Qualifier |
| 49.70 | Glacier (AA) | Columbia Falls/Glacier Dual |
| 49.95 | Huntley Project (B) | Al Walker Memorial Meet |
| 50.02 | Shepherd (B) | Southern B/C Divisional |
| 50.17 | Great Falls (AA) | Skor Dekam Invite |
| 50.31 | Hamilton (A) | Nelson-Thomas ABC Meet |
| 50.31 | Frenchtown (A) | Nelson-Thomas ABC Meet |
| 50.52 | Fort Benton (C) | 9C District Meet |
| 50.77 | Florence-Carlton (B) | 6B/13C District Meet |
| 50.78 | Custer Co./Miles City (A) | Eastern A Divisional |
| 50.84 | Missoula Big Sky (AA) | Big Sky Quad |
| 50.92 | Bozeman (AA) | Midland Roundtable Top 10 |
| 50.99 | Beaverhead Co./Dillon (A) | Western A Divisional |
| 51.00 | Butte (AA) | Western AA Divisional |
| 51.02 | Great Falls CMR (AA) | Eastern AA Divisional |
| 51.03 | Jefferson/Boulder (B) | 5B/12C District Meet |
| 51.07 | Anaconda (B) | KLH Memorial Track Meet |
| 51.08 | Helena Capital (AA) | Helena Crosstown Meet |
| 51.14 | Fairview (B) | 2B District Meet |
| 51.33 | Missoula Sentinel (AA) | Western AA Divisional |
| 51.38 | Billings Skyview (AA) | Eastern AA Divisional |
| 51.39 | Fergus/Lewistown (A) | Midland Roundtable Top 10 |
| 51.39 | Shelby (B) | Northern B Divisional |
| 51.42 | Laurel (A) | Eastern A Divisional |
| 51.46 | Shields Valley (C) | Western B/C Divisional |
| 51.50 | Belt (C) | 8C District Meet |
| 51.57 | Broadwater/Townsend (B) | Helena Small Schools Invite |
| 51.67 | Sidney (A) | Eastern A Divisional |
| 51.67 | Lockwood (A) | Sidney Twilight Meet |
| 51.68 | Flathead (AA) | Archie Roe Invitational |
| 51.88 | Billings Central (A) | Billings Invite |
| 51.94 | Three Forks (B) | 5B/12C District Meet |
| 51.97 | Denton-Geyser-Stanford (C) | Mustang Invite |
| 52.12 | Columbia Falls (A) | Columbia Falls/Whitefish Dual |
| 52.13 | Columbus (B) | Al Walker Memorial Meet |
| 52.27 | Polson (A) | Western A Divisional |
| 52.28 | Fairfield (B) | Northern B Divisional |
| 52.33 | Superior (B) | 7B District Meet |
| 52.34 | Dawson Co./Glendive (A) | Eastern A Divisional |
| 52.42 | Bainville (C) | Eastern C Divisional |
| 52.45 | Wolf Point (B) | 2B District Meet |
| 52.53 | Bigfork (A) | Nelson-Thomas ABC Meet |
| 52.60 | Circle (C) | Eastern C Divisional |
| 52.62 | Stevensville (A) | Western A Divisional |
| 52.95 | Manhattan Christian (C) | Western B/C Divisional |
| 52.99 | Chester-Joplin-Inverness (C) | Northern C Divisional |
| 53.05 | Chester-Joplin-Inverness (C) | Choteau Twilight Meet |