| Mark | Athlete | School | Year | Meet |
|---|
| 1:52.69 | Ryan Harrington | Great Falls (AA) | 12 | State AA Championship |
| 1:53.07 | Wilson Schmidt | Belgrade (AA) | 10 | State AA Championship |
| 1:53.20 | Nathan Neil | Bozeman (AA) | 12 | Bozeman Crosstown |
| 1:54.36 | Ashtyn Rask | Great Falls (AA) | 12 | State AA Championship |
| 1:55.12 | Kiedis MacFarlane | Gallatin (Bozeman) (AA) | 11 | State AA Championship |
| 1:55.46 | Dylan Hill | Helena (AA) | 10 | State AA Championship |
| 1:56.00 | Isaiah Cowan | Missoula Big Sky (AA) | 11 | MCPS Invitational |
| 1:56.16 | Christian Landers | Bozeman (AA) | 10 | State AA Championship |
| 1:56.31 | Reid Bartholomew | Gallatin (Bozeman) (AA) | 10 | State AA Championship |
| 1:56.58 | Ridley Key | Missoula Hellgate (AA) | 11 | State AA Championship |
| 1:56.72 | Henry Sund | Helena (AA) | 11 | State AA Championship |
| 1:57.37 | Daniel Johnson | Bozeman (AA) | 12 | State AA Championship |
| 1:57.44 | Quinn Newman | Missoula Sentinel (AA) | 12 | Sentinel Triangular 4/11 |
| 1:58.00 | Kasen Kastner | Flathead (AA) | 11 | MCPS Invitational |
| 1:58.29 | Chandler Christensen | Billings Skyview (AA) | 11 | State AA Championship |
| 1:58.51 | Emerson Hamma | Billings Skyview (AA) | 10 | State AA Championship |
| 1:58.72 | Aidan Brown | Belgrade (AA) | 12 | State AA Championship |
| 1:58.89 | Owen Thiel | Glacier (AA) | 10 | Archie Roe Invitational |
| 1:58.91 | Chris Jenemann | Helena (AA) | 11 | State AA Championship |
| 1:59.59 | Kye Mcabee | Billings West (AA) | 10 | State AA Championship |
| 1:59.62 | Ryan Maus | Helena (AA) | 12 | Helena Triangular |
| 1:59.88 | Tyler Inabnit | Missoula Sentinel (AA) | 11 | Sentinel Triangular 4/30 |
| 2:00.04 | Jake Matthews | Helena (AA) | 11 | Russ Plicher Western Top 10 |
| 2:00.15 | Jeremy Posdon | Bozeman (AA) | 12 | Last Chance Invite |
| 2:00.52 | Milo Kauffman | Helena (AA) | 9 | Helena Triangular |
| 2:00.66 | Elliot Stimpson | Helena (AA) | 11 | Helena Triangular |
| 2:00.66 | Cohen Kastelitz | Glacier (AA) | 12 | State AA Championship |
| 2:01.10 | Axel Butler | Gallatin (Bozeman) (AA) | 10 | Last Chance Invite |
| 2:01.13 | Ben Shaules | Missoula Sentinel (AA) | 11 | Swede Dahlberg Invitational |
| 2:01.20 | Callahan Waters | Bozeman (AA) | 10 | Billings/Bozeman Quad |
| 2:01.24 | Judah McConville | Gallatin (Bozeman) (AA) | 12 | Last Chance Invite |
| 2:01.30 | Mason Moler | Billings West (AA) | 12 | Billings Invitational |
| 2:01.31 | Evan Colberg | Helena Capital (AA) | 11 | Helena Crosstown Meet |
| 2:01.49 | John Spinti | Great Falls (AA) | 12 | Great Falls Triangular |
| 2:01.60 | Taylor Neil | Bozeman (AA) | 9 | Bozeman Crosstown |
| 2:01.97 | Jack Syverson | Glacier (AA) | 11 | Glacier-Columbia Falls Dual |
| 2:02.39 | Brennan Bowman | Billings West (AA) | 12 | Billings Invite |
| 2:02.89 | Paul Dannenberg | Billings West (AA) | 11 | Swede Dahlberg Invitational |
| 2:03.56 | Lucas Keith | Billings West (AA) | 10 | Billings West Meet 4/23 |
| 2:03.67 | Wilson Derry | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 2:03.98 | Miles Halvorsen | Bozeman (AA) | 10 | Swede Dahlberg Invitational |