| Mark | School | Meet |
|---|
| 41.89 | Missoula Sentinel (AA) | State AA |
| 42.30 | Glacier (AA) | State AA |
| 42.59 | Billings West (AA) | Midland Roundtable Top 10 |
| 42.77 | Gallatin (Bozeman) (AA) | State AA |
| 43.03 | Helena Capital (AA) | State AA |
| 43.10 | Great Falls CMR (AA) | Great Falls Crosstown Dual |
| 43.12 | Bozeman (AA) | State AA |
| 43.24 | Flathead (AA) | State AA |
| 43.34 | Great Falls (AA) | Great Falls Crosstown Dual |
| 43.62 | Butte (AA) | State AA |
| 43.69 | Belgrade (AA) | State AA |
| 43.84 | Billings Senior (AA) | Gary Benson Border War (WY) |
| 43.96 | Helena (AA) | State AA |
| 44.48 | Billings Skyview (AA) | Billings City Meet |
| 44.82 | Missoula Big Sky (AA) | Western AA Divisional |
| 45.21 | Missoula Hellgate (AA) | Flathead-Hellgate-Sentinel Tri |