| Mark | School | Meet |
|---|
| 42.45 | Bozeman (AA) | Eastern AA Divisional |
| 43.03 | Helena (AA) | State AA |
| 43.07 | Missoula Big Sky (AA) | State AA |
| 43.18 | Helena Capital (AA) | State AA |
| 43.21 | Butte (AA) | Eastern AA Divisional |
| 43.23 | Missoula Sentinel (AA) | State AA |
| 43.29 | Billings Skyview (AA) | State AA |
| 43.31 | Dawson Co./Glendive (A) | State A |
| 43.46 | Great Falls CMR (AA) | Eastern AA Divisional |
| 43.54 | Loyola Sacred Heart (B) | State B |
| 43.79 | Billings West (AA) | Eastern AA Divisional |
| 43.82 | Billings Senior (AA) | Eastern AA Divisional |
| 43.89 | Glasgow (B) | State B |
| 43.89 | Whitefish (A) | State A |
| 43.91 | Thompson Falls (B) | State B |
| 43.91 | Corvallis (A) | State A |
| 43.94 | Stevensville (A) | State A |
| 43.99 | Hamilton (A) | Southwestern A Divisional |
| 44.15 | Glacier (AA) | Archie Roe Invitational |
| 44.19 | Bigfork (B) | State B |
| 44.21 | Flathead (AA) | Western AA Divisional |
| 44.25 | Fergus/Lewistown (A) | State A |
| 44.31 | Powder River Co./Broadus (C) | State C |
| 44.38 | Butte Central (A) | Swede Dahlberg Invitational |
| 44.39 | Fairfield (B) | State B |
| 44.40 | Charlo (C) | State C |
| 44.46 | Manhattan (B) | State B |
| 44.53 | Baker (B) | State B |
| 44.54 | Billings Central (A) | State A |
| 44.60 | Ennis (C) | State C |
| 44.65 | Polson (A) | State A |
| 44.70 | Laurel (A) | Eastern A Divisional |
| 44.74 | Great Falls (AA) | Eastern AA Divisional |
| 44.74 | Columbia Falls (A) | Northwestern A Divisional |
| 44.82 | Belt (C) | State C |
| 44.85 | Powell Co./Deer Lodge (B) | State B |
| 44.86 | Hot Springs (C) | Western C Divisional |
| 44.87 | Frenchtown (A) | Northwestern A Divisional |
| 45.00 | Broadwater/Townsend (B) | State B |
| 45.10 | Hardin (A) | State A |
| 45.27 | Huntley Project (B) | State B |
| 45.30 | Savage (C) | State C |
| 45.33 | Beaverhead Co./Dillon (A) | Dillon Invitational |
| 45.40 | Belgrade (AA) | John Tomich Invitational |
| 45.43 | Troy (B) | Seeley-Swan Invitational 5/10 |
| 45.49 | Sidney (A) | Jock Stop Invitational |