| Mark | School | Meet |
|---|
| 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 |
| 50.83 | Billings Central (A) | State A |
| 50.92 | Fergus/Lewistown (A) | State A |
| 51.39 | Corvallis (A) | State A |
| 51.41 | Polson (A) | Western A Divisionals |
| 51.45 | Dawson Co./Glendive (A) | State A |
| 51.96 | Laurel (A) | MidLand Round Table Top Ten |
| 52.24 | Hamilton (A) | Sapphire Twilight Meet |
| 52.31 | Havre (A) | Eastern A Divisional |
| 52.33 | Libby (A) | State B |
| 52.57 | Beaverhead Co./Dillon (A) | Western A Divisonal |
| 52.57 | Beaverhead Co./Dillon (A) | Western A Divisionals |