| Mark | School | Meet |
|---|
| 47.55 | Billings West (AA) | State AA |
| 48.69 | Helena (AA) | State AA |
| 49.19 | Whitefish (A) | State A |
| 49.60 | Billings Skyview (AA) | State AA |
| 49.62 | Missoula Sentinel (AA) | State AA |
| 49.68 | Gallatin (Bozeman) (AA) | State AA |
| 49.90 | Laurel (A) | State A |
| 50.01 | Missoula Hellgate (AA) | Flathead-Hellgate-Sentinel Tri |
| 50.19 | Bigfork (B) | State B |
| 50.22 | Beaverhead Co./Dillon (A) | State A |
| 50.22 | Glacier (AA) | State AA |
| 50.31 | Flathead (AA) | Western AA Divisional |
| 50.37 | Anaconda (B) | State B |
| 50.54 | Bozeman (AA) | State AA |
| 50.60 | Sweet Grass Co./Big Timber (B) | State B |
| 50.64 | Missoula Big Sky (AA) | State AA |
| 50.80 | Great Falls (AA) | Great Falls Crosstown Dual |
| 50.81 | Helena Capital (AA) | Western AA Divisional |
| 50.83 | Billings Senior (AA) | Billings City Meet |
| 50.92 | Great Falls CMR (AA) | State AA |
| 50.95 | Columbia Falls (A) | State A |
| 50.98 | Corvallis (A) | State A |
| 51.19 | Fergus/Lewistown (A) | Fairfield Belt State Preview |
| 51.36 | Conrad (B) | State B |
| 51.47 | Loyola Sacred Heart (B) | State B |
| 51.48 | Belgrade (AA) | State AA |
| 51.53 | Libby (A) | State A |
| 51.56 | Manhattan Christian (C) | State C |
| 51.58 | Shepherd (B) | State B |
| 51.61 | Butte (AA) | Western AA Divisional |
| 51.65 | Seeley-Swan (C) | Fairfield Belt State Preview |
| 51.66 | Havre (A) | State A |
| 51.72 | West Yellowstone (C) | State C |
| 51.88 | Billings Central (A) | State A |
| 51.94 | Huntley Project (B) | 4B Districts |
| 51.96 | Saco (C) | State C |
| 51.98 | Baker (B) | 3B Districts |
| 52.02 | Custer Co./Miles City (A) | State A |
| 52.22 | Superior (C) | State C |
| 52.33 | Highwood (C) | State C |
| 52.42 | Twin Bridges (C) | State C |
| 52.42 | Ennis (C) | State C |
| 52.45 | Seeley-Swan (C) | 13C Districts |
| 52.55 | Hamilton (A) | Nelson-Thomas ABC Meet |
| 52.57 | Shields Valley (C) | 12C Districts |
| 52.57 | Ronan (A) | State A |
| 52.64 | Glasgow (B) | State B |
| 52.91 | Sidney (A) | State A |
| 52.94 | Lockwood (A) | State A |
| 52.97 | Lincoln Co./Eureka (B) | Western B Divisional |