| Mark | Athlete | School | Year | Meet |
|---|
| 4:17.29 | Levi Taylor | Laurel (A) | 12 | Midland Roundtable Top 10 |
| 4:19.02 | Ben Perrin | Flathead (AA) | 12 | State AA |
| 4:20.21 | Ian Curtis | Missoula Hellgate (AA) | 11 | State AA |
| 4:24.62 | Owen Smith | Billings Senior (AA) | 11 | State AA |
| 4:27.06 | Tyler Schmautz | Frenchtown (A) | 11 | Nelson-Thomas ABC Meet |
| 4:28.61 | Jonathan Wheeler | Bozeman (AA) | 11 | State AA |
| 4:28.98 | Griffin May | Bozeman (AA) | 11 | State AA |
| 4:29.06 | Alexander Koehn | Billings West (AA) | 12 | State AA |
| 4:30.29 | Simon Hill | Glacier (AA) | 11 | State AA |
| 4:30.78 | Gordon Gentry | Great Falls CMR (AA) | 12 | State AA |
| 4:31.08 | Xander Danenhauer | Bozeman (AA) | 10 | State AA |
| 4:31.55 | Lukas Horejsi | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 4:31.69 | Kyle Calles | Flathead (AA) | 12 | State AA |
| 4:32.74 | Ellis McKean | Glasgow (B) | 12 | State B |
| 4:32.77 | James Normandeau | Ronan (A) | 11 | Nelson-Thomas ABC Meet |
| 4:33.27 | Stirling Marshall-Pryde | Bozeman (AA) | 10 | State AA |
| 4:33.36 | Sam Fulbright | Fergus/Lewistown (A) | 11 | Eastern A Divisional |
| 4:33.59 | Dax Summers | Missoula Hellgate (AA) | 11 | Missoula City Meet |
| 4:33.65 | Finn Bentler | Billings Senior (AA) | 11 | State AA |
| 4:33.98 | Bryce Love | Manhattan (B) | 12 | State B |
| 4:34.91 | Caleb Hornung | Billings West (AA) | 10 | State AA |
| 4:34.95 | Zak Meeker | Manhattan (B) | 12 | State B |
| 4:35.63 | Clay Paddock | Fairfield (B) | 11 | State B |
| 4:35.74 | Otto MacDonald | Missoula Sentinel (AA) | 12 | State AA |
| 4:36.11 | Jesse Dimich-Louvet | Billings Senior (AA) | 11 | Billings Senior Tuesday Meet #2 |
| 4:36.16 | Wills Degrandpre | Charlo (C) | 12 | KLH Memorial Track Meet |
| 4:36.32 | Louis Ingalls | Broadwater/Townsend (B) | 12 | State B |
| 4:36.71 | Aren Alexander-Battee | Glacier (AA) | 12 | Western Top 10 Meet |
| 4:36.79 | Zane Roush | Helena (AA) | 12 | CMR/Butte/Helena Triangular |
| 4:38.33 | Ignatius Fitzgerald | Missoula Hellgate (AA) | 10 | Western AA Divisional |
| 4:38.96 | Ben Morrison | Manhattan Christian (C) | 11 | KLH Memorial Track Meet |
| 4:39.11 | Wilson Overby | Glasgow (B) | 11 | State B |
| 4:39.42 | Riley Schott | Manhattan Christian (C) | 10 | KLH Memorial Track Meet |
| 4:39.66 | McKay Hunter | Missoula Sentinel (AA) | 11 | Western AA Divisional |
| 4:39.97 | Nash Grafe | Glacier (AA) | 12 | Western AA Divisional |
| 4:40.25 | Trajan Hill | Hardin (A) | 12 | Glendive Elks |
| 4:40.34 | Justin Burd | Browning (A) | 11 | Nelson-Thomas ABC Meet |
| 4:40.64 | Dane McCalla | Billings Central (A) | 11 | Jock Stop Invitational |
| 4:41.11 | Samuel Smith | Richey-Lambert (C) | 10 | State C |
| 4:41.47 | Ryan Fenley | Harlowton (C) | 10 | State C |
| 4:41.56 | Jackson Nye | Harrison (C) | 10 | State C |