| Mark | Athlete | School | Year | Meet |
|---|
| 38.24 | Colin Dolese | Missoula Hellgate (AA) | 11 | State AA |
| 38.52 | Chris Lange | Missoula Big Sky (AA) | 11 | State AA |
| 39.22 | Josh Barrows | Helena (AA) | 10 | State AA |
| 39.22 | Jay Owens | Missoula Big Sky (AA) | 12 | State AA |
| 39.24 | Preston Schubert | Thompson Falls (B) | 12 | State B |
| 39.25 | Ike Zier | Manhattan (B) | 12 | State B |
| 39.99 | Mason Storm | Great Falls CMR (AA) | 12 | Great Falls Crosstown Meet |
| 40.02 | Brian Sinrud | Helena Capital (AA) | 12 | State AA |
| 40.16 | Mick Paffhausen | Beaverhead Co./Dillon (A) | 11 | State A |
| 40.18 | Adam Cebulla | Glacier (AA) | 12 | Glacier-Coulmbia Falls Dual |
| 40.24 | Taylor Trollope | Billings Skyview (AA) | 10 | State AA |
| 40.27 | Silas Hasselbrook | Loyola Sacred Heart (B) | 11 | State B |
| 40.59 | Jadin Casey | Stevensville (A) | 10 | Wayne Estes Invitational |
| 40.63 | Kyle Romero | Billings Skyview (AA) | 12 | State AA |
| 40.86 | George Smith | Billings Central (A) | 12 | State A |
| 40.89 | Riley Barta | Billings Skyview (AA) | 10 | State AA |
| 40.98 | Bryce Green | Broadwater/Townsend (B) | 10 | State B |
| 41.03 | Michael Kossman | Billings West (AA) | 12 | State AA |
| 41.07 | Kail Pope | Charlo (C) | 11 | State C |
| 41.08 | Alex Smith | Plentywood (B) | 12 | State B |
| 41.08 | Nate Williams | Great Falls (AA) | 10 | Great Falls Crosstown Meet |
| 41.08 | Keaton Grove | Whitefish (A) | 10 | Northwestern A Divisional |
| 41.09 | Tucker Meyer | Fairfield (B) | 12 | State B |
| 41.18 | Dominique Holt | Thompson Falls (B) | 12 | Southern B Divisional |
| 41.21 | Myka Penny | Westby-Grenora (C) | 10 | State C |
| 41.22 | Matt Hayes | Frenchtown (A) | 12 | State A |
| 41.38 | Kaedon Caprara | Butte (AA) | 12 | Skor-DeKam Invitational |
| 41.39 | Chance Edwards | Great Falls (AA) | 12 | Great Falls-Capital Dual |
| 41.49 | Keir Sanzano | Alberton (C) | 11 | State C |
| 41.53 | Tom Donahue | Billings West (AA) | 11 | Billings City Meet |
| 41.54 | Dylan Knox | Darby (C) | 12 | Western C Divisional |
| 41.56 | John Luke Koslosky | Beaverhead Co./Dillon (A) | 11 | State A |
| 41.67 | Shane Mitchell | Helena Capital (AA) | 12 | Helena Crosstown Meet |
| 41.71 | Cory Stanberry | Anaconda (A) | 11 | Western Montana Top 10 |
| 41.80 | Jake Egley | Flathead (AA) | 12 | Archie Roe Invitational |
| 41.85 | Keir Sanzano | Alberton (C) | 11 | Western C Divisional |
| 41.91 | Kris Cleveland | Hamilton (A) | 11 | Southwestern A Divisional |
| 41.91 | Deryk Pearsall | Centerville (C) | 12 | Northern C Divisional |
| 41.99 | Matthew Sarrazin | Shields Valley (C) | 12 | State C |