| Mark | Athlete | School | Year | Meet |
|---|
| 21.80 | Ben Bliven | Flathead (AA) | 12 | Western AA Divisional |
| 21.82 | Luke Ruch | Helena (AA) | 12 | Helena Crosstown Meet |
| 21.90 | William Hollensteiner | Flathead (AA) | 11 | Western AA Divisional |
| 21.92 | Cooper Nelson | Helena Capital (AA) | 11 | Helena Crosstown Meet |
| 22.11 | Louis Kamps | Gallatin (Bozeman) (AA) | 11 | Eastern AA Divisional |
| 22.25 | Caleb Conver | Billings West (AA) | 12 | Eastern AA Divisional |
| 22.32 | Drew Almquist | Helena Capital (AA) | 10 | MCPS Invitational |
| 22.33 | Steele Harris | Great Falls (AA) | 10 | Great Falls/Bozeman Dual |
| 22.36 | Trey Peterson | Helena (AA) | 11 | Helena Crosstown Meet |
| 22.40 | Cooper Pelc | Glacier (AA) | 10 | Western AA Divisional |
| 22.45 | Cooper Tschan | Missoula Sentinel (AA) | 10 | Western AA Divisional |
| 22.50 | Blake Williams | Missoula Big Sky (AA) | 11 | Western AA Divisional |
| 22.51 | Lucas Kadillak | Bozeman (AA) | 12 | Great Falls/Bozeman Dual |
| 22.54 | Brady Williams | Missoula Big Sky (AA) | 11 | Western AA Divisional |
| 22.57 | Christian Alexander | Billings West (AA) | 11 | Billings City Meet |
| 22.62 | Wesley Ehret | Belgrade (AA) | 11 | Belgrade Open |
| 22.63 | Boaz Mckinney | Billings Skyview (AA) | 12 | SCAD#1 |
| 22.64 | Travis Ryland-Davis | Helena (AA) | 12 | Western AA Divisional |
| 22.65 | Calvin Paczkowski | Billings West (AA) | 11 | Midland Roundtable Top 10 |
| 22.68 | Westdon Kelley | Billings West (AA) | 9 | Eastern AA Divisional |
| 22.74 | Pacer Lybbert | Helena (AA) | 11 | Helena Crosstown Meet |
| 22.78 | Kellen Gibson | Missoula Sentinel (AA) | 11 | MCPS Invitational |
| 22.82 | Dushawn Washington | Billings West (AA) | 12 | Billings City Meet |
| 22.84 | Ethan DeLeon | Billings Senior (AA) | 11 | Billings City Meet |
| 22.88 | Cameron LeProwse | Missoula Sentinel (AA) | 11 | Missoula "Greg Rice" City Meet |
| 22.91 | Treven Thronson | Billings Skyview (AA) | 10 | Eastern AA Divisional |
| 22.96 | Bladen Madel | Great Falls (AA) | 11 | Eastern AA Divisional |
| 23.03 | Ethan Anderson | Glacier (AA) | 12 | CMR/Glacier Dual |
| 23.03 | Rocky Mogstad | Missoula Hellgate (AA) | 12 | Missoula "Greg Rice" City Meet |
| 23.04 | Adam Guajardo | Missoula Big Sky (AA) | 11 | Helena High/Big Sky/Hellgate Tri |
| 23.05 | Lane Humphrey | Billings West (AA) | 10 | Billings City Meet |
| 23.09 | Layne Remme | Billings Skyview (AA) | 10 | Billings City Meet |
| 23.12 | Nolan Friesen | Missoula Sentinel (AA) | 10 | Western AA Divisional |
| 23.12 | Cameron Fyffe | Missoula Sentinel (AA) | 11 | Missoula "Greg Rice" City Meet |
| 23.14 | Boone Davis | Helena Capital (AA) | 10 | Helena Crosstown Meet |
| 23.16 | Sam Sampson | Butte (AA) | 12 | Swede Dahlberg Invitational |
| 23.17 | Auston Rowe | Helena (AA) | 11 | Helena Crosstown Meet |