| Mark | Athlete | School | Year | Meet |
|---|
| 4:15.78 | Elliot Stimpson | Helena (AA) | 12 | Western AA Divisional |
| 4:16.50 | Owen Thiel | Glacier (AA) | 11 | Western AA Divisional |
| 4:16.50 | Henry Sund | Helena (AA) | 12 | Western AA Divisional |
| 4:17.98 | Wilson Schmidt | Belgrade (AA) | 11 | Eastern AA Divisional |
| 4:18.30 | Taylor Neil | Bozeman (AA) | 10 | Eastern AA Divisional |
| 4:19.68 | Dylan Hill | Helena (AA) | 11 | Sentinel/Helena/Belgrade Tri |
| 4:21.36 | Emerson Hamma | Great Falls CMR (AA) | 11 | Skor Dekam Invite |
| 4:23.74 | Milo Kauffman | Helena (AA) | 10 | Skor Dekam Invite |
| 4:23.85 | Kye McAbee | Billings West (AA) | 11 | Eastern AA Divisional |
| 4:26.22 | Kasen Kastner | Flathead (AA) | 12 | Archie Roe Invitational |
| 4:26.56 | Isaiah Cowan | Missoula Big Sky (AA) | 12 | MCPS Invitational |
| 4:26.82 | Christian Landers | Bozeman (AA) | 11 | Skor Dekam Invite |
| 4:27.50 | Conrad Schruth | Great Falls (AA) | 12 | Skor Dekam Invite |
| 4:28.66 | Miles Joseph Miller | Missoula Hellgate (AA) | 10 | Western AA Divisional |
| 4:29.15 | Miles Halvorsen | Bozeman (AA) | 11 | Swede Dahlberg Invitational |
| 4:29.53 | Camden Houchin | Butte (AA) | 11 | Russ Plicher Western Top 10 |
| 4:29.54 | Jude Sparkman | Glacier (AA) | 11 | Columbia Falls/Glacier Dual |
| 4:30.02 | Garrett Hinderman | Helena (AA) | 11 | Western AA Divisional |
| 4:30.31 | Eamon Fitzgerald | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 4:30.68 | Branlin Foote | Bozeman (AA) | 10 | Eastern AA Divisional |
| 4:31.09 | Isaiah Hudson | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 4:31.74 | Lucas Keith | Billings West (AA) | 11 | Eastern AA Divisional |
| 4:32.38 | Gabe Ackerly | Glacier (AA) | 10 | Russ Plicher Western Top 10 |
| 4:35.16 | Drake Fricke | Bozeman (AA) | 12 | Midland Roundtable Top 10 |
| 4:35.34 | Noah Miller | Billings Skyview (AA) | 12 | Eastern AA Divisional |
| 4:35.76 | Jack Baumes | Missoula Hellgate (AA) | 12 | Russ Plicher Western Top 10 |
| 4:35.96 | Julius Yeager | Billings West (AA) | 11 | Senior/Gallatin/West Triangular |
| 4:35.96 | Julius Yeagar | Billings West (AA) | | Senior/Gallatin/West Triangular |
| 4:36.81 | Jake Matthews | Helena (AA) | 12 | Helena Small Schools Invite |
| 4:37.92 | Mica Kantor | Missoula Sentinel (AA) | 10 | Western AA Divisional |
| 4:38.36 | Gabriel Rock | Billings Skyview (AA) | 10 | Eastern AA Divisional |
| 4:38.75 | Reid Bartholomew | Gallatin (Bozeman) (AA) | 11 | Last Chance Qualifier |
| 4:39.26 | Chandler Christensen | Billings Skyview (AA) | 12 | Billings City Meet |
| 4:39.65 | Jack Syverson | Glacier (AA) | 12 | CMR/Glacier Dual |