| Mark | Athlete | School | Year | Meet |
|---|
| 4:23.06 | Lane Cole | Hamilton (A) | 12 | Nelson-Thomas ABC Meet |
| 4:25.26 | Brinson Wyche | Corvallis (A) | 12 | State A |
| 4:30.70 | Jeremy Bockus | Browning (A) | 12 | State A |
| 4:30.97 | Colter Purcell | Hamilton (A) | 12 | Western A Divisional |
| 4:31.72 | Colter Kirkland | Hamilton (A) | 12 | Western A Divisional |
| 4:33.06 | Caleb Tomac | Havre (A) | 10 | Eastern A Divisional |
| 4:33.67 | Gage Gunther | Custer Co./Miles City (A) | 10 | Eastern A Divisional |
| 4:33.85 | Tayjon Joe | Hardin (A) | 12 | Midland Roundtable Top 10 |
| 4:36.53 | Gavin Hagberg | Corvallis (A) | 11 | Western A Divisional |
| 4:37.94 | Mason Genovese | Whitefish (A) | 10 | Western A Divisional |
| 4:37.94 | Nate Ingelfinger | Whitefish (A) | 11 | Western A Divisional |
| 4:38.47 | Evan Bennett | Hamilton (A) | 9 | Western A Divisional |
| 4:38.51 | Andrew Stump | Hardin (A) | 12 | Bill Kelly Eastern A Twilight Invite |
| 4:38.63 | Deneb Linton | Whitefish (A) | 10 | Nelson-Thomas ABC Meet |
| 4:38.87 | Ben Steadman | Beaverhead Co./Dillon (A) | 11 | Western A Divisional |