| Mark | School | Meet |
|---|
| 41.47 | Flathead (AA) | State AA Championship |
| 41.88 | Glacier (AA) | Western AA Divisional |
| 42.44 | Gallatin (Bozeman) (AA) | Eastern AA Divisional |
| 42.47 | Havre (A) | State A Championship |
| 42.58 | Helena Capital (AA) | State AA Championship |
| 42.67 | Missoula Sentinel (AA) | State AA Championship |
| 42.74 | Columbia Falls (A) | State A Championship |
| 42.75 | Billings West (AA) | Eastern AA Divisional |
| 42.89 | Helena (AA) | State AA Championship |
| 42.95 | Billings Skyview (AA) | Billings City Meet |
| 42.96 | Red Lodge (B) | State B Championship |
| 42.97 | Laurel (A) | Eastern A Divisional |
| 43.02 | Great Falls (AA) | Great Falls Crosstown Meet |
| 43.16 | Corvallis (A) | State A Championship |
| 43.22 | Bozeman (AA) | Last Chance Invite |
| 43.26 | Butte (AA) | Western AA Divisional |
| 43.29 | Missoula Big Sky (AA) | State AA Championship |
| 43.37 | Sidney (A) | State A Championship |
| 43.39 | Missoula Hellgate (AA) | Western AA Divisional |
| 43.43 | Billings Senior (AA) | Eastern AA Divisional |
| 43.54 | Whitefish (A) | State A Championship |
| 43.56 | Park/Livingston (A) | Eastern A Divisional |
| 43.59 | Beaverhead Co./Dillon (A) | State A Championship |
| 43.92 | Great Falls CMR (AA) | CMR-Capital Dual |
| 43.93 | Belgrade (AA) | Eastern AA Divisional |
| 43.99 | Loyola Sacred Heart (B) | State B Championship |
| 44.05 | Harlowton-Ryegate-Judith Gap (C) | State C Championship |
| 44.16 | Columbus (B) | State B Championship |
| 44.16 | Belt (C) | State C Championship |
| 44.18 | Custer Co./Miles City (A) | State A Championship |
| 44.19 | Hobson-Moore (C) | State C Championship |
| 44.32 | Valley Christian (C) | State C Championship |
| 44.36 | Hamilton (A) | Nelson-Thomas ABC Meet |
| 44.39 | Florence-Carlton (B) | State B Championship |
| 44.59 | Lockwood (A) | State A Championship |
| 44.62 | Baker (B) | Southern B Divisional |
| 44.71 | Lustre Christian (C) | State C Championship |
| 44.72 | Chester-Joplin-Inverness (C) | Northern C Divisional |
| 44.84 | Superior (C) | State B Championship |
| 44.93 | Plains (B) | State B Championship |
| 44.93 | Glasgow (B) | State B Championship |
| 44.97 | Fairview (B) | Northern B Divisional |
| 44.98 | Bigfork (A) | Archie Roe Invitational |
| 45.00 | Park City (B) | State B Championship |
| 45.03 | Stevensville (A) | State A Championship |
| 45.06 | Billings Central (A) | Joe Tacke Invitational |
| 45.17 | Three Forks (B) | State B Championship |
| 45.20 | Ronan (A) | Nelson-Thomas ABC Meet |
| 45.20 | Fergus/Lewistown (A) | Bill Kelly Twilight Meet |
| 45.22 | Polson (A) | State A Championship |
| 45.27 | Cascade (C) | Northern C Divisional |
| 45.28 | Manhattan (B) | Southern B Divisional |
| 45.29 | Shelby (B) | 1B Districts |
| 45.30 | East Helena (A) | State A Championship |
| 45.32 | Lustre Christian (C) | 3C Districts |
| 45.33 | Jefferson/Boulder (B) | Gallatin Valley Invitational |
| 45.42 | Lincoln Co./Eureka (B) | Western B Divisional |
| 45.44 | Scobey (C) | Eastern C Divisional |
| 45.45 | Anaconda (B) | Florence/Darby Invitational |
| 45.46 | Fort Benton (C) | State C Championship |