| Mark | Athlete | School | Year | Meet |
|---|
| 48-07.25 | Sam Henderson | Butte (AA) | 12 | Western AA Divisional |
| 47-05 | Aayden Simmons | Helena (AA) | 12 | Helena Crosstown Meet |
| 46-10 | Porter Gibbs | Missoula Big Sky (AA) | 12 | Helena/Big Sky/Hellgate Tri |
| 46-00 | William Hollensteiner | Flathead (AA) | 11 | Western AA Divisional |
| 44-06 | Dylan Garcia | Billings West (AA) | 11 | Eastern AA Divisional |
| 44-06 | Sean Klem | Billings West (AA) | 11 | Billings Invite |
| 44-06 | Nicholas Bray | Belgrade (AA) | 12 | Skyview/Bozeman/Belgrade Tri |
| 44-04.25 | Adam Guajardo | Missoula Big Sky (AA) | 11 | Western AA Divisional |
| 44-01 | Cooper Pelc | Glacier (AA) | 10 | Kalispell Time Trials |
| 43-05 | Josiah Coelho | Billings Senior (AA) | 11 | Dan Hansen Invitational (WY) |
| 43-04.25 | Walker Olson | Billings West (AA) | 10 | Eastern AA Divisional |
| 43-04 | Jack Robinson | Glacier (AA) | 11 | Western AA Divisional |
| 43-02.25 | Tevin Keller | Billings Senior (AA) | 12 | Eastern AA Divisional |
| 43-02 | Jaxan Lieberg | Helena (AA) | 12 | Great Falls/Helena Dual |
| 43-01.25 | Trey Peterson | Helena (AA) | 11 | Western AA Divisional |
| 42-10.75 | Jayvyn Gallup | Billings Skyview (AA) | 12 | Eastern AA Divisional |
| 42-08.5 | Conor Toivonen | Helena Capital (AA) | 12 | Helena Crosstown Meet |
| 42-08.5 | Blake Carver | Great Falls (AA) | 12 | Great Falls Crosstown Meet |
| 42-02.75 | Jaxsyn Baker Spivey | Billings Skyview (AA) | 11 | Eastern AA Divisional |
| 42-02.25 | Paxton McConnell | Belgrade (AA) | 11 | Gallatin Valley Invite |
| 41-09.5 | Chase Chaffin | Glacier (AA) | 11 | Harry 'Swede' Dahlberg Invitational |
| 41-07 | Calvin Bucklin | Missoula Sentinel (AA) | 11 | Glacier/Sentinel Dual |
| 41-07 | Trek Egan | Billings Senior (AA) | 12 | Lockwood SCAD#2 |
| 41-02 | Eli Imperato | Glacier (AA) | 10 | Kalispell Time Trials |
| 41-01 | Tallin McCartney | Great Falls CMR (AA) | 12 | Swede Dahlberg Invitational |
| 41-00 | Case Procacci | Missoula Hellgate (AA) | 10 | Hellgate/Sentinel/Flathead Tri |
| 41-00 | Trae Headlee | Billings Skyview (AA) | 12 | Eastern AA Divisional |