| Mark | School | Meet |
|---|
| 4:04.34 | Custer Co./Miles City (A) | Midland Roundtable Top 10 |
| 4:04.35 | Frenchtown (A) | Western A Divisional |
| 4:06.12 | Hamilton (A) | Western A Divisional |
| 4:06.19 | Havre (A) | Glendive Shriners Invitational |
| 4:06.90 | Whitefish (A) | Russ Plicher Western Top 10 |
| 4:07.21 | Billings Central (A) | Eastern A Divisional |
| 4:09.03 | Sidney (A) | Norm Girard Top 10 Track Meet |
| 4:12.05 | Corvallis (A) | Russ Plicher Western Top 10 |
| 4:13.25 | Fergus/Lewistown (A) | Midland Roundtable Top 10 |
| 4:13.79 | Laurel (A) | Eastern A Divisional |
| 4:14.12 | Hardin (A) | Sidney Twilight Meet |
| 4:16.11 | Polson (A) | Western A Divisional |
| 4:16.34 | Beaverhead Co./Dillon (A) | Western A Divisional |
| 4:18.81 | Columbia Falls (A) | Russ Plicher Western Top 10 |
| 4:22.66 | Dawson Co./Glendive (A) | Sidney Twilight Meet |
| 4:22.85 | Lockwood (A) | Eastern A Divisional |