| Mark | Athlete | School | Year | Meet |
|---|
| 36.91 | Nash Coley | Gallatin (Bozeman) (AA) | 12 | State AA Championship |
| 38.05 | Ethan Anderson | Glacier (AA) | 11 | State AA Championship |
| 38.89 | Carson Krack | Whitefish (A) | 12 | Western A Divisional |
| 38.91 | Oliver Simianer | Missoula Big Sky (AA) | 12 | State AA Championship |
| 39.67 | Merek Mihelish | Helena Capital (AA) | 11 | Skor Dekam Invitational |
| 39.74 | Jackson Swanz | Hobson-Moore (C) | 12 | State C Championship |
| 39.82 | Brody Hardy | Frenchtown (A) | 11 | State A Championship |
| 39.99 | JD Shepard | Belt (C) | 12 | State C Championship |
| 40.11 | Lane Chivers | Flathead (AA) | 11 | Flathead-Glacier Dual |
| 40.17 | Johnslee Pierre | Lustre Christian (C) | 10 | State C Championship |
| 40.24 | Rance Hamilton | Manhattan Christian (C) | 11 | State C Championship |
| 40.27 | Cormack Batt | Missoula Big Sky (AA) | 10 | Big Sky Triangular 4/9 |
| 40.29 | Caleb Litzinger | Great Falls (AA) | 11 | Eastern AA Divisional |
| 40.32 | Caleb Stosich | Sweet Grass Co./Big Timber (B) | 11 | State B Championship |
| 40.44 | Corbin Weltzien | Missoula Hellgate (AA) | 11 | Archie Roe Invitational |
| 40.49 | Matt Hansen | Powder River Co./Broadus (C) | 12 | Al Walker Memorial Meet |
| 40.57 | Evan Barnes | Glacier (AA) | 12 | Western AA Divisional |
| 40.64 | Wyatt Johnson | Bigfork (A) | 12 | State A Championship |
| 40.65 | Carter Dahlke | Gallatin (Bozeman) (AA) | 10 | State AA Championship |
| 40.69 | Connor Hylton | Missoula Big Sky (AA) | 12 | Greg Rice City Meet |
| 40.69 | Tytan Cook | Anaconda (B) | 12 | Dillon Invitational |
| 40.70 | Bergen Mysse | Harlowton-Ryegate-Judith Gap (C) | 12 | Al Walker Memorial Meet |
| 40.70 | Ben Hales | West Yellowstone (C) | 11 | State C Championship |
| 40.75 | Cain Hanson | Columbus (B) | 9 | State B Championship |
| 41.16 | Jacob Herring | Havre (A) | 12 | State A Championship |
| 41.17 | Zane Moodry | Butte Central (A) | 12 | State A Championship |
| 41.25 | Jameson Canney | Helena Capital (AA) | 10 | Helena Crosstown Meet |
| 41.29 | Mark Ahner | Glacier (AA) | 11 | State AA Championship |
| 41.30 | Gavin Mow | Helena Capital (AA) | 11 | Western AA Divisional |
| 41.33 | Sy Gellner | Billings Skyview (AA) | 11 | Billings City Meet |
| 41.38 | Kougar Kappel | Red Lodge (B) | 10 | State B Championship |
| 41.43 | Andrew Lewis | Beaverhead Co./Dillon (A) | 12 | Dillon Invitational |
| 41.61 | Stran Lytton | Red Lodge (B) | 12 | Al Walker Memorial Meet |
| 41.63 | Donovan Gibbs | Circle (C) | 12 | 3C Districts |
| 41.74 | Camble Bjornstad | Billings Skyview (AA) | 11 | Bozeman Quad |
| 41.81 | Bladen Madel | Great Falls (AA) | 10 | State AA Championship |
| 41.86 | Alex Hausmann | Glacier (AA) | 12 | Sentinel-Glacier Dual |
| 41.87 | Khye Gamas | Glasgow (B) | 10 | State B Championship |
| 41.93 | Devin Tillman | Hardin (A) | 11 | Eastern A Divisional |
| 41.99 | Austin Savik | Bigfork (A) | 10 | Columbia Falls Triangular |
| 42.08 | Braden McGuirl | Loyola Sacred Heart (B) | 11 | Western B Divisional |
| 42.10 | Gage Witt | Park City (B) | 12 | Billings West Meet 4/23 |