| Mark | Athlete | School | Year | Meet |
|---|
| 9:32.01 | Kyler Harris | Florence-Carlton (B) | 12 | Russ Plicher Western Top 10 |
| 9:34.14 | Cass Violett | Three Forks (B) | 12 | Midland Roundtable Top 10 |
| 9:44.14 | CJ Pijanowski | Florence-Carlton (B) | 12 | State B/C Championship |
| 9:50.76 | Ethan Walker | Harlem (B) | 9 | State B/C Championship |
| 9:50.81 | John Jermyn | Plains (B) | 9 | State B/C Championship |
| 9:52.38 | Harlon Leishman | St. Ignatius (B) | 12 | State B/C Championship |
| 9:55.12 | Nolan Flynn | Broadwater/Townsend (B) | 12 | State B/C Championship |
| 9:58.98 | Ben Martin | Darby (B) | 10 | Russ Plicher Western Top 10 |
| 10:06.48 | Luke Halverson | Manhattan (B) | 12 | State B/C Championship |
| 10:07.97 | Wyatt Yeager | Choteau (B) | 12 | Choteau Twilight Meet |
| 10:11.48 | Auston Schellig | Joliet (B) | 11 | Al Walker Memorial Meet |
| 10:12.57 | Cord Greer | Plains (B) | 9 | State B/C Championship |
| 10:13.42 | Keaton Sample | Colstrip (B) | 11 | Al Walker Memorial Meet |
| 10:13.81 | Sebastian Schroeder | Florence-Carlton (B) | 10 | State B/C Championship |
| 10:14.31 | Teddy Simser | Manhattan (B) | 11 | State B/C Championship |