| Mark | Athlete | School | Year | Meet |
|---|
| 21-06 | Degen Nelson | Columbus (B) | 12 | Gallatin Valley Invitational |
| 21-04.5 | Jarek Janz | Baker (B) | 11 | Baker Invitational |
| 21-01.75 | Chase Cook | Red Lodge (B) | 11 | Southern B Divisional |
| 21-00.25 | Talen Reynolds | Loyola Sacred Heart (B) | 12 | Gallatin Valley Invitational |
| 20-10 | Malik Lyttle | Loyola Sacred Heart (B) | 12 | Sentinel-Glacier Dual |
| 20-09.75 | Rhain Gonzalez | St. Ignatius (B) | 12 | Whitefish ARM Invitational |
| 20-09.5 | Caleb Stosich | Sweet Grass Co./Big Timber (B) | 11 | Joliet/Park City Invitational |
| 20-09.5 | Stran Lytton | Red Lodge (B) | 12 | Joliet/Park City Invitational |
| 20-08.5 | Adrien Matuck | Poplar (B) | 12 | 2B Districts |
| 20-08.25 | Carson Nissen | Chinook (B) | 11 | State B Championship |
| 20-07.5 | Wade Dahood | Anaconda (B) | 12 | 6B Districts |
| 20-07.5 | Gabe Johnson | Manhattan (B) | 12 | Gallatin Valley Invitational |