| Mark | Athlete | School | Year | Meet |
|---|
| 21.70 | Dalton Daum | Butte (AA) | 11 | State AA |
| 21.99 | Wyatt David | Bozeman (AA) | 12 | Eastern AA Divisional |
| 22.05 | Sterling Reneau | Missoula Sentinel (AA) | 12 | State AA |
| 22.20 | Colin Dolese | Missoula Hellgate (AA) | 12 | Hellgate Triangular |
| 22.20 | Jacob Kleinhans | Bozeman (AA) | 11 | Bozeman-Butte Dual |
| 22.22 | Evan Epperly | Glacier (AA) | 12 | State AA |
| 22.29 | Mason Carle | Billings Skyview (AA) | 11 | Skyview Meet |
| 22.39 | Logan Laird | Billings West (AA) | 12 | Eastern AA Divisional |
| 22.39 | Kyle Nickol | Helena Capital (AA) | 12 | Helena Crosstown Meet |
| 22.41 | Drake Schafer | Billings Skyview (AA) | 12 | Eastern AA Divisional |
| 22.48 | Kyle Cochran | Helena (AA) | 12 | CMR-Helena Dual |
| 22.48 | Anthony Taylor | Helena Capital (AA) | 11 | Helena Crosstown Meet |
| 22.57 | Alex Mustard | Missoula Big Sky (AA) | 12 | Capital Triangular |
| 22.71 | Josh Barrows | Helena (AA) | 11 | CMR-Helena Dual |
| 22.92 | Alex Thomas | Great Falls CMR (AA) | 12 | Great Falls Crosstown Meet |
| 22.92 | Brady Heffner | Missoula Big Sky (AA) | 12 | Big Sky Meet |
| 22.94 | Thor Olson | Great Falls (AA) | 11 | Eastern AA Divisional |
| 23.01 | Sam Kirkeide | Missoula Big Sky (AA) | 11 | Big Sky Meet |
| 23.02 | Bryce Cuchine | Great Falls CMR (AA) | 11 | Eastern AA Divisional |
| 23.15 | Connor Matthews | Helena (AA) | 10 | Small Schools Invitational |
| 23.15 | Brendan Atchison | Billings Skyview (AA) | 10 | Whitefish A.R.M. Invitational |