| Mark | Athlete | School | Year | Meet |
|---|
| 38.41 | Brody Hardy | Frenchtown (A) | 12 | Western A Divisional |
| 38.51 | William Hollensteiner | Flathead (AA) | 11 | Western AA Divisional |
| 38.64 | Ethan Anderson | Glacier (AA) | 12 | Archie Roe Invitational |
| 39.03 | Lane Chivers | Flathead (AA) | 12 | MCPS Invitational |
| 39.27 | Cormack Batt | Missoula Big Sky (AA) | 11 | Russ Plicher Western Top 10 |
| 39.55 | Caleb Stosich | Sweet Grass Co./Big Timber (B) | 12 | State B/C Championship |
| 39.55 | Johnslee Pierre | Lustre Christian (C) | 11 | State B/C Championship |
| 39.70 | Merek Mihelish | Helena Capital (AA) | 12 | Helena Crosstown Meet |
| 39.80 | Austin Savik | Bigfork (A) | 11 | Nelson-Thomas ABC Meet |
| 39.81 | Jameson Canney | Helena Capital (AA) | 11 | Skor Dekam Invite |
| 39.96 | Cain Hanson | Columbus (B) | 10 | Midland Roundtable Top 10 |
| 40.09 | Caleb Litzinger | Great Falls (AA) | 12 | Eastern AA Divisional |
| 40.10 | Stuart Brennan | Corvallis (A) | 12 | Western A Divisional |
| 40.12 | Kougar Kappel | Red Lodge (B) | 11 | State B/C Championship |
| 40.27 | Reese Dahlke | Gallatin (Bozeman) (AA) | 12 | Eastern AA Divisional |
| 40.39 | Kellan Krueger | Missoula Big Sky (AA) | 11 | Missoula "Greg Rice" City Meet |
| 40.58 | Nick McAllister | Hot Springs (C) | 12 | State B/C Championship |
| 40.62 | Oliver Mow | Helena Capital (AA) | 10 | Helena Crosstown Meet |
| 40.64 | Grayson Kiser | Great Falls (AA) | 12 | Great Falls/Helena Dual |
| 40.66 | Jacob Swanz | Denton-Geyser-Stanford (C) | 11 | State B/C Championship |
| 40.67 | Mark Ahner | Glacier (AA) | 12 | Western AA Divisional |
| 40.78 | Carter Dahlke | Gallatin (Bozeman) (AA) | 11 | Last Chance Qualifier |
| 40.83 | Wade Qualtier | Ronan (A) | 12 | Western A Divisional |
| 40.89 | Isaiah Burt | Laurel (A) | 11 | Eastern A Divisional |
| 40.89 | Brett Chivers | Flathead (AA) | 10 | Western AA Divisional |
| 40.90 | Tyler Lane | Cascade (C) | 12 | Mustang Invite |
| 40.91 | Cooper Pelc | Glacier (AA) | 10 | Columbia Falls/Glacier Dual |
| 40.94 | Keefer McGree | Butte Central (A) | 12 | Western A Divisional |
| 41.00 | Zedek Lisle | Fergus/Lewistown (A) | 10 | Eastern A Divisional |
| 41.16 | Carter Petre | Helena (AA) | 12 | Western AA Divisional |
| 41.23 | McKay Shobe | Fergus/Lewistown (A) | 11 | Eastern A Divisional |
| 41.28 | Bladen Madel | Great Falls (AA) | 11 | Eastern AA Divisional |
| 41.34 | Saber Allen | Fairfield (B) | 10 | Northern B Divisional |
| 41.37 | Tanner Vick | Power-Dutton-Brady (C) | 11 | Mustang Invite |
| 41.44 | Liam Palmer | Glacier (AA) | 9 | Archie Roe Invitational |
| 41.55 | Nolan Lee | Loyola Sacred Heart (B) | 12 | Western B/C Divisional |
| 41.65 | Ryder Carper | Fairfield (B) | 12 | Northern B Divisional |
| 41.70 | Trae Headlee | Billings Skyview (AA) | 12 | Skyview/Bozeman/Belgrade Tri |
| 41.71 | Seth Kiser | Helena (AA) | 10 | Western AA Divisional |
| 41.72 | Tevin Keller | Billings Senior (AA) | 12 | Eastern AA Divisional |
| 41.74 | Robert Miller | Browning (A) | 10 | Western A Divisional |
| 41.74 | Jayce Eby | Missoula Sentinel (AA) | 10 | Western AA Divisional |
| 41.80 | Owen Oliver | Loyola Sacred Heart (B) | 10 | Western B/C Divisional |
| 41.84 | Conner Miller | Fergus/Lewistown (A) | 10 | Golden Eagle Invite |
| 41.85 | Eric Worden | Joliet (B) | 12 | State B/C Championship |
| 41.87 | Carson Gulick | Whitefish (A) | 12 | Western A Divisional |
| 41.90 | Khye Gamas | Glasgow (B) | 11 | 2B District Meet |
| 42.39 | Blake Waldner | Belt (C) | | Northern C Divisional |