| Mark | School | Meet |
|---|
| 47.55 | Billings West (AA) | Eastern AA Divisionals |
| 48.69 | Missoula Sentinel (AA) | State AA |
| 49.14 | Great Falls (AA) | Eastern AA Divisionals |
| 49.15 | Billings Senior (AA) | State AA |
| 49.25 | Great Falls CMR (AA) | Great Falls City Meet |
| 49.33 | Choteau (B) | State B |
| 49.42 | Missoula Big Sky (AA) | State AA |
| 49.66 | Missoula Hellgate (AA) | State AA |
| 49.66 | Billings Skyview (AA) | State AA |
| 49.76 | Bozeman (AA) | State AA |
| 49.91 | Helena Capital (AA) | Western AA Divisonal |
| 50.06 | Butte Central (A) | State A |
| 50.14 | Columbia Falls (A) | State A |
| 50.23 | Bigfork (A) | State B |
| 50.40 | Whitefish (A) | State A |
| 50.58 | Helena (AA) | State AA |
| 50.75 | Butte (AA) | State AA |
| 50.76 | Glacier (AA) | State AA |
| 50.83 | Billings Central (A) | State A |
| 50.92 | Fergus/Lewistown (A) | State A |
| 50.95 | Seeley-Swan (C) | State AA |
| 51.03 | Glasgow (B) | State B |
| 51.19 | Powell Co./Deer Lodge (B) | Western B Divisonal |
| 51.21 | Belgrade (AA) | State A |
| 51.22 | Westby-Grenora (C) | State C |
| 51.39 | Corvallis (A) | State A |
| 51.41 | Polson (A) | Western A Divisionals |
| 51.45 | Dawson Co./Glendive (A) | State A |
| 51.48 | Lincoln Co./Eureka (B) | State B |
| 51.71 | Loyola Sacred Heart (B) | State B |
| 51.74 | Belt (C) | Northern C Divisional |
| 51.81 | Ennis (B) | State C |
| 51.81 | Flathead (AA) | State AA |
| 51.96 | Laurel (A) | MidLand Round Table Top Ten |
| 52.05 | Chinook (B) | State C |
| 52.24 | Hamilton (A) | Sapphire Twilight Meet |
| 52.25 | Baker (B) | State B |
| 52.29 | Arlee (C) | Western C Divisonal |
| 52.31 | Joliet (B) | State B |
| 52.31 | Havre (A) | Eastern A Divisional |
| 52.33 | Wibaux (C) | State C |
| 52.33 | Libby (A) | State B |
| 52.55 | Shields Valley (C) | State C |
| 52.57 | Beaverhead Co./Dillon (A) | Western A Divisonal |
| 52.57 | Beaverhead Co./Dillon (A) | Western A Divisionals |
| 52.61 | Charlo (C) | State C |
| 52.67 | Roundup (B) | State B |
| 52.67 | Roundup (B) | State B |
| 52.80 | Powder River Co./Broadus (C) | State C |
| 52.83 | Drummond (C) | 13C Districts |
| 52.96 | Powder River Co./Broadus (C) | Southern C Divisional Meet |