| Mark | Athlete | School | Year | Meet |
|---|
| 46-04.5 | Brenden Fetter | Chinook (B) | 12 | Norm Girard North/East Top 10 |
| 45-05.75 | Noah Wilson | Ennis (B) | 12 | State C Championship |
| 43-02.75 | Talen Reynolds | Loyola Sacred Heart (B) | 11 | State B Championship |
| 43-00 | Bryce Umphrey | Saint Ignatius (B) | 12 | Lake County Meet |
| 42-03 | Hunter Stevens | Jefferson/Boulder (B) | 10 | Gallatin Valley Invitational |
| 42-00.25 | AJ Foote | Lodge Grass (B) | | State B Championship |
| 41-10.75 | Gage Witt | Park City (B) | 11 | Harlo/Park City Invite |
| 41-02.5 | Luke Strizich | Jefferson/Boulder (B) | 11 | 5B Districts |
| 41-01.5 | Wyatt Hamilton | Park City (B) | 12 | Midland Roundtable Top 10 |
| 41-00.5 | Holden Stepper | Park City (B) | 12 | Harlo/Park City Invite |