| Mark | School | Meet |
|---|
| 42.03 | Glacier (AA) | State AA Championship |
| 42.24 | Helena Capital (AA) | State AA Championship |
| 42.46 | Missoula Sentinel (AA) | State AA Championship |
| 42.70 | Billings Senior (AA) | Eastern AA Divisional |
| 42.72 | Columbia Falls (A) | State A Championship |
| 42.74 | Beaverhead Co./Dillon (A) | State A Championship |
| 42.85 | Frenchtown (A) | Nelson-Thomas ABC Meet |
| 43.00 | Great Falls CMR (AA) | State AA Championship |
| 43.30 | Gallatin (Bozeman) (AA) | Skor DeKam Invite |
| 43.32 | Laurel (A) | State A Championship |
| 43.34 | Great Falls (AA) | The Falls Tuesday Trials |
| 43.35 | Helena (AA) | State AA Championship |
| 43.43 | Flathead (AA) | State AA Championship |
| 43.46 | Butte (AA) | Western AA Divisional |
| 43.75 | Billings Skyview (AA) | Billings Public City Meet |
| 43.77 | Hamilton (A) | State A Championship |
| 43.82 | Billings West (AA) | Eastern AA Divisional |
| 43.85 | Lustre Christian (C) | State C Championship |
| 43.92 | Sidney (A) | State A Championship |
| 43.94 | Broadwater/Townsend (B) | State B Championship |
| 44.00 | Jefferson/Boulder (B) | State B Championship |
| 44.08 | Corvallis (A) | State A Championship |
| 44.12 | Havre (A) | State A Championship |
| 44.16 | Missoula Big Sky (AA) | Western AA Divisional |
| 44.27 | Belgrade (AA) | Skor DeKam Invite |
| 44.29 | Valley Christian (C) | State C Championship |
| 44.36 | Custer Co./Miles City (A) | State A Championship |
| 44.37 | Red Lodge (B) | Southern B Divisional |
| 44.39 | Billings Central (A) | Eastern A Divisional |
| 44.45 | Chinook (B) | State C Championship |
| 44.46 | Bozeman (AA) | Skor DeKam Invite |
| 44.56 | Cascade (C) | State C Championship |
| 44.62 | Loyola Sacred Heart (B) | KLH Memorial Invitational |
| 44.63 | Whitefish (A) | Last Chance Triangular |
| 44.69 | Florence-Carlton (B) | State B Championship |
| 44.72 | Conrad (B) | State B Championship |
| 44.72 | Lockwood (A) | State A Championship |
| 44.80 | Polson (A) | State A Championship |
| 44.81 | Ronan (A) | Lake County Meet |
| 44.85 | Froid-Medicine Lake (C) | State C Championship |
| 44.92 | Saint Ignatius (B) | Western B Divisional |
| 44.92 | Darby (B) | Western C Divisional |
| 44.95 | Wolf Point (B) | Northern B Divisional |
| 44.97 | Manhattan Christian (C) | State C Championship |
| 44.97 | Belt (C) | Mustang Invitational |
| 45.01 | Fergus/Lewistown (A) | Eastern A Divisional |
| 45.02 | Manhattan Christian (C) | Western C Divisional |
| 45.03 | Stevensville (A) | Western A Divisional |
| 45.07 | Superior (C) | State C Championship |
| 45.07 | Park City (B) | State C Championship |
| 45.18 | Fort Benton (C) | State C Championship |
| 45.20 | Bigfork (A) | State B Championship |
| 45.26 | Roundup (B) | State B Championship |