| Mark | Athlete | School | Year | Meet |
|---|
| 1:51.31 | Wilson Schmidt | Belgrade (AA) | 9 | State AA Championship |
| 1:51.82 | Weston Brown | Bozeman (AA) | 12 | State AA Championship |
| 1:52.68 | Nathan Neil | Bozeman (AA) | 11 | State AA Championship |
| 1:53.28 | Henry Ballinger | Helena (AA) | 12 | State AA Championship |
| 1:54.30 | Keagen Crosby | Missoula Sentinel (AA) | 12 | State AA Championship |
| 1:54.41 | Daniel Wiltse | Missoula Hellgate (AA) | 12 | State AA Championship |
| 1:55.05 | Finneas Colescott | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 1:55.80 | Aaron French | Helena (AA) | 11 | Russ Plicher Top 10 |
| 1:58.51 | Tyler Avery | Glacier (AA) | 12 | State AA Championship |
| 1:58.51 | Ryan Harrington | Great Falls (AA) | 11 | CMR-Bozeman Dual |
| 1:58.67 | Ridley Key | Missoula Hellgate (AA) | 10 | State AA Championship |
| 1:58.70 | Carson Steckelberg | Gallatin (Bozeman) (AA) | 12 | Bozeman Triangular |
| 1:58.73 | Garrett Dahlke | Gallatin (Bozeman) (AA) | 12 | Bozeman Triangular |
| 1:59.05 | Kasen Kastner | Flathead (AA) | 10 | State AA Championship |
| 1:59.33 | Jaxon Straus | Billings West (AA) | 12 | West-Skyview Dual |
| 1:59.79 | Isaiah Cowan | Missoula Big Sky (AA) | 10 | Russ Plicher Top 10 |
| 1:59.79 | Ben Shaules | Missoula Sentinel (AA) | 10 | State AA Championship |
| 2:00.31 | Andrew Pellandini | Billings Senior (AA) | 10 | Billings Public City Meet |
| 2:00.32 | Aidan Brown | Belgrade (AA) | 11 | Eastern AA Divisional |
| 2:00.57 | Mason Moler | Billings West (AA) | 11 | Billings Public City Meet |
| 2:00.86 | Garret Bodily | Great Falls CMR (AA) | 11 | Eastern AA Divisional |
| 2:01.38 | Tyler Inabnit | Missoula Sentinel (AA) | 10 | Glacier-Sentinel Dual |
| 2:01.47 | Ashtyn Rask | Great Falls (AA) | 11 | Eastern AA Divisional |
| 2:01.85 | Christian Landers | Bozeman (AA) | 9 | Eastern AA Divisional |
| 2:02.35 | Ian Flynn | Helena Capital (AA) | 12 | MCPS Invite |
| 2:02.38 | Nico Petrini | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 2:02.40 | Wilson Derry | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 2:02.81 | Jeremy Posdon | Bozeman (AA) | 11 | Eastern AA Divisional |
| 2:03.49 | Chandler Christensen | Billings Skyview (AA) | 10 | Midland Roundtable Top 10 |
| 2:03.55 | Paul Dannenberg | Billings West (AA) | 10 | Eastern AA Divisional |
| 2:03.84 | Elias Wight | Billings Senior (AA) | 10 | Eastern AA Divisional |
| 2:03.94 | Lucas Keith | Billings West (AA) | 9 | Billings Public City Meet |