| Mark | School | Meet |
|---|
| 41.68 | Glacier (AA) | State AA |
| 42.59 | Billings West (AA) | State AA |
| 42.62 | Custer Co./Miles City (A) | State A |
| 42.72 | Great Falls CMR (AA) | State AA |
| 42.75 | Bozeman (AA) | State AA |
| 42.92 | Sidney (A) | State A |
| 43.13 | Missoula Sentinel (AA) | Western AA Divisional |
| 43.20 | Helena Capital (AA) | Western AA Divisional |
| 43.26 | Polson (A) | State A |
| 43.31 | Park/Livingston (A) | State A |
| 43.35 | Flathead (AA) | State AA |
| 43.35 | Huntley Project (B) | State B |
| 43.48 | Frenchtown (A) | State A |
| 43.51 | Columbia Falls (A) | State A |
| 43.54 | Billings Central (A) | State A |
| 43.62 | Billings Senior (AA) | Billings Invitational |
| 43.62 | Butte (AA) | Eastern AA Divisional |
| 43.68 | Corvallis (A) | Western A Divisional |
| 43.79 | Forsyth (C) | Southern B Divisional |
| 43.84 | Helena (AA) | State AA |
| 43.85 | Beaverhead Co./Dillon (A) | State A |
| 43.93 | Seeley-Swan (C) | State C |
| 44.20 | Missoula Big Sky (AA) | State AA |
| 44.25 | Laurel (A) | State A |
| 44.30 | Glasgow (B) | State B |
| 44.33 | Fairfield (B) | State B |
| 44.40 | Billings Skyview (AA) | Eastern AA Divisional |
| 44.45 | Loyola Sacred Heart (B) | Bigfork Invitational |
| 44.52 | Butte Central (A) | MHSA Class A and B Track & Field Meet |
| 44.52 | Butte Central (A) | State A |
| 44.52 | Scobey (C) | State C |
| 44.53 | Libby (A) | Western A Divisional |
| 44.55 | Sweet Grass Co./Big Timber (B) | State B |
| 44.61 | Belgrade (AA) | State A |
| 44.72 | Missoula Hellgate (AA) | State AA |
| 44.79 | Broadwater/Townsend (B) | State B |
| 44.83 | Manhattan Christian (C) | State C |
| 44.98 | Great Falls (AA) | State AA |
| 45.03 | Powell Co./Deer Lodge (B) | Western B Divisional |
| 45.11 | Bigfork (A) | State B |
| 45.16 | Anaconda (B) | Western B Divisional |
| 45.17 | Hamilton (A) | Western A Divisional |
| 45.20 | Missoula Big Sky (AA) | Western Top 10 Meet |
| 45.30 | Whitehall (B) | Dillon Invite |
| 45.43 | Lincoln Co./Eureka (B) | State B |
| 45.49 | Jefferson/Boulder (B) | 5B Districts |