| Mark | Athlete | School | Year | Meet |
|---|
| 4:04.89 | Nathan Neil | Bozeman (AA) | 12 | State AA Championship |
| 4:14.35 | Quinn Newman | Missoula Sentinel (AA) | 12 | State AA Championship |
| 4:18.00 | Ryan Harrington | Great Falls (AA) | 12 | State AA Championship |
| 4:18.63 | Tyler Inabnit | Missoula Sentinel (AA) | 11 | State AA Championship |
| 4:18.81 | Owen Thiel | Glacier (AA) | 10 | State AA Championship |
| 4:20.01 | Henry Sund | Helena (AA) | 11 | State AA Championship |
| 4:20.50 | Jeremy Posdon | Bozeman (AA) | 12 | State AA Championship |
| 4:23.00 | Ashtyn Rask | Great Falls (AA) | 12 | State AA Championship |
| 4:23.35 | Elliot Stimpson | Helena (AA) | 11 | State AA Championship |
| 4:25.46 | Taylor Neil | Bozeman (AA) | 9 | State AA Championship |
| 4:26.74 | Miles Halvorsen | Bozeman (AA) | 10 | State AA Championship |
| 4:27.28 | Mason Moler | Billings West (AA) | 12 | State AA Championship |
| 4:27.65 | Dylan Hill | Helena (AA) | 10 | Russ Plicher Western Top 10 |
| 4:27.80 | Daniel Johnson | Bozeman (AA) | 12 | State AA Championship |
| 4:27.89 | Wilson Derry | Missoula Hellgate (AA) | 12 | State AA Championship |
| 4:28.34 | John Spinti | Great Falls (AA) | 12 | Flathead-Great Falls Dual |
| 4:28.97 | Wilson Schmidt | Belgrade (AA) | 10 | Last Chance Invite |
| 4:28.98 | Kiedis MacFarlane | Gallatin (Bozeman) (AA) | 11 | State AA Championship |
| 4:29.06 | Milo Kauffman | Helena (AA) | 9 | Skor Dekam Invitational |
| 4:29.30 | Kye Mcabee | Billings West (AA) | 10 | State AA Championship |
| 4:29.51 | Kasen Kastner | Flathead (AA) | 11 | Western AA Divisional |
| 4:30.03 | Emerson Hamma | Great Falls CMR (AA) | 10 | Skor Dekam Invitational |
| 4:30.70 | Aidan Brown | Belgrade (AA) | 12 | State AA Championship |
| 4:30.88 | Isaiah Cowan | Missoula Big Sky (AA) | 11 | Western AA Divisional |
| 4:31.38 | Paul Dannenberg | Billings West (AA) | 11 | State AA Championship |
| 4:32.13 | Kieran Anderson | Bozeman (AA) | 12 | Last Chance Invite |
| 4:32.54 | Axel Butler | Gallatin (Bozeman) (AA) | 10 | Eastern AA Divisional |
| 4:32.88 | Bridger Warner | Gallatin (Bozeman) (AA) | 9 | Eastern AA Divisional |
| 4:33.43 | Jake Matthews | Helena (AA) | 11 | Helena Triangular |
| 4:33.72 | Ridley Key | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 4:34.43 | Lucas Keith | Billings West (AA) | 10 | Billings West Triangular 4/5 |
| 4:34.80 | Brodie Tirrell | Belgrade (AA) | 12 | Eastern AA Divisional |
| 4:34.81 | Chandler Christensen | Billings Skyview (AA) | 11 | Eastern AA Divisional |
| 4:35.30 | Odin Berryman | Missoula Hellgate (AA) | 10 | Western AA Divisional |
| 4:36.42 | Judah McConville | Gallatin (Bozeman) (AA) | 12 | Eastern AA Divisional |
| 4:37.21 | Oscar Valliant | Missoula Hellgate (AA) | 11 | Greg Rice City Meet |
| 4:37.81 | Sayer Henderson | Missoula Hellgate (AA) | 12 | Greg Rice City Meet |
| 4:37.83 | Jack Syverson | Glacier (AA) | 11 | Western AA Divisionals |
| 4:38.03 | Christian Landers | Bozeman (AA) | 10 | Bozeman Crosstown |
| 4:38.07 | Charles Clater | Missoula Big Sky (AA) | 11 | Western AA Divisional |
| 4:38.85 | Jonas Kreitner | Glacier (AA) | 12 | Kalispell Time Trials |
| 4:39.65 | Mica Kantor | Missoula Sentinel (AA) | 9 | Western AA Divisional |
| 4:39.88 | Gabe Ackerly | Glacier (AA) | 9 | Western AA Divisional |