| Mark | Athlete | School | Year | Meet |
|---|
| 4:26.82 | Ty Mogan | Laurel (A) | 10 | State A |
| 4:27.06 | Anthony Schmalz | Hamilton (A) | 11 | State A |
| 4:32.60 | Jake Purlee | Corvallis (A) | 11 | Southwestern A Divisional |
| 4:32.80 | Easton Albert | Hamilton (A) | 11 | Southwestern A Divisional |
| 4:35.43 | Wyatt MadPlume | Browning (A) | 12 | State A |
| 4:36.63 | Jace Kalbfleisch | Whitefish (A) | 12 | State A |
| 4:39.80 | Sage Schoonen | Beaverhead Co./Dillon (A) | 10 | Southwestern A Divisional |
| 4:39.94 | Levi Fox | Billings Central (A) | 12 | Billings Invitational |
| 4:40.01 | Charles Vance | Park/Livingston (A) | 12 | State A |
| 4:40.10 | Aidan Theard | Anaconda (A) | 11 | Southwestern A Divisional |
| 4:40.50 | Cameron Meikle | Hamilton (A) | 9 | Southwestern A Divisional |
| 4:40.93 | Fischer Gangemi | Whitefish (A) | 12 | State A |
| 4:42.92 | Caleb Ware | Hardin (A) | 10 | State A |
| 4:43.20 | Matt Keltgen | Dawson Co./Glendive (A) | 12 | Eastern A Divisional |
| 4:43.54 | Trei Bullock | Fergus/Lewistown (A) | 12 | State A |