| Mark | Athlete | School | Year | Meet |
|---|
| 22.46 | Hunter Bear Cloud | Hardin (A) | 10 | State A |
| 22.46 | Jace Klucewich | Frenchtown (A) | 10 | KLH Memorial Track Meet |
| 22.46 | Jack Waddell | Park/Livingston (A) | 10 | State A |
| 22.47 | Keith Vanderlaan | Custer Co./Miles City (A) | 12 | State A |
| 22.52 | Cutter Thatcher | Butte Central (A) | 11 | State A |
| 22.57 | Drew Morgan | Columbia Falls (A) | 12 | Western Top 10 Meet |
| 22.63 | Jay Beagle | Libby (A) | 10 | Nelson-Thomas ABC Meet |
| 22.66 | Ethan Renner | Laurel (A) | 11 | State A |
| 22.72 | Beau Dantic | Laurel (A) | 9 | State A |
| 22.75 | Dylan Cervelli | Beaverhead Co./Dillon (A) | 12 | State A |
| 22.76 | Daniel Henjum | Columbia Falls (A) | 11 | Nelson-Thomas ABC Meet |
| 23.11 | Preston Branstetter | Laurel (A) | 12 | State A |
| 23.17 | Justus Peterson | Beaverhead Co./Dillon (A) | 11 | State A |