| Mark | Athlete | School | Year | Meet |
|---|
| 4:10.68 | Weston Brown | Bozeman (AA) | 12 | State AA Championship |
| 4:13.48 | Nathan Neil | Bozeman (AA) | 11 | Eastern AA Divisional |
| 4:15.08 | Ryan Harrington | Great Falls (AA) | 11 | State AA Championship |
| 4:18.81 | Finneas Colescott | Missoula Hellgate (AA) | 12 | State AA Championship |
| 4:19.82 | Henry Ballinger | Helena (AA) | 12 | Western AA Divisional |
| 4:20.75 | Carson Steckelberg | Gallatin (Bozeman) (AA) | 12 | State AA Championship |
| 4:20.83 | Jaxon Straus | Billings West (AA) | 12 | State AA Championship |
| 4:23.46 | Wilson Schmidt | Belgrade (AA) | 9 | State AA Championship |
| 4:24.07 | Keagen Crosby | Missoula Sentinel (AA) | 12 | Western AA Divisional |
| 4:25.57 | Oren Arthun | Manhattan Christian (C) | 11 | Western C Divisional |
| 4:25.93 | Daniel Wiltse | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 4:26.29 | Greyson Piseno | Billings Central (A) | 9 | State A Championship |
| 4:26.82 | Finn Schretenthaler | Park/Livingston (A) | 9 | State A Championship |
| 4:27.16 | Ben Bird | Hardin (A) | 9 | State A Championship |
| 4:27.74 | Mason Moler | Billings West (AA) | 11 | Billings Central Invite |
| 4:28.26 | Jack Jensen | Bigfork (A) | 11 | State B Championship |
| 4:28.36 | Henry Sund | Helena (AA) | 10 | Helena Crosstown Meet |
| 4:28.52 | Caleb Tomac | Havre (A) | 11 | State A Championship |
| 4:28.67 | Kiedis MacFarlane | Gallatin (Bozeman) (AA) | 12 | State AA Championship |
| 4:28.76 | Tyler Inabnit | Missoula Sentinel (AA) | 10 | Western AA Divisional |
| 4:28.78 | Ridley Key | Missoula Hellgate (AA) | 10 | Western AA Divisional |
| 4:28.85 | Jaden Silha | Dawson Co./Glendive (A) | 10 | State A Championship |
| 4:28.92 | Quinn Newman | Missoula Sentinel (AA) | 11 | State AA Championship |
| 4:29.57 | Evan Bennett | Hamilton (A) | 10 | Nelson-Thomas ABC Meet |
| 4:30.59 | Thomas Oylear | Powder River Co./Broadus (C) | 11 | Midland Roundtable Top 10 |
| 4:30.60 | Kyler Harris | Florence-Carlton (B) | 10 | Western B Divisional |
| 4:30.76 | Charlie Serafin | Park/Livingston (A) | 12 | State A Championship |
| 4:30.87 | Aaron French | Helena (AA) | 11 | Helena Crosstown Meet |
| 4:30.95 | Simon Douglas | Whitefish (A) | 10 | State A Championship |
| 4:31.03 | Kenyon Popiel | Bozeman (AA) | 12 | State AA Championship |
| 4:31.23 | Shaphan Hubner | Manhattan Christian (C) | 10 | State C Championship |
| 4:32.06 | Kyler Holinde | Glasgow (B) | 10 | State B Championship |
| 4:32.28 | Brody Henry | Havre (A) | 12 | Nelson-Thomas ABC Meet |
| 4:32.63 | Kasen Kastner | Flathead (AA) | 10 | Last Chance Triangular |
| 4:32.64 | Bauer Hollman | Flathead (AA) | 11 | Last Chance Triangular |
| 4:32.89 | Scott Parke | Drummond (C) | 11 | State C Championship |
| 4:33.22 | Luke Mest | Jefferson/Boulder (B) | 11 | State B Championship |
| 4:33.26 | Elliot Stimpson | Helena (AA) | 10 | Helena Crosstown Meet |
| 4:33.30 | Owen Thiel | Glacier (AA) | 9 | Archie Roe Invitational |
| 4:33.47 | Taylor Doleac | Hamilton (A) | 9 | Nelson-Thomas ABC Meet |
| 4:33.51 | Andrew Pellandini | Billings Senior (AA) | 10 | Butte-Senior Dual |
| 4:33.82 | Peyton Summers | Wolf Point (B) | 11 | Mustang Invitational |
| 4:34.68 | Wilson Derry | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 4:35.08 | Emerson Hamma | Great Falls CMR (AA) | 9 | Skor DeKam Invite |
| 4:35.37 | Nate Ingelfinger | Whitefish (A) | 12 | Last Chance Triangular |
| 4:35.46 | Wyatt Ehredt | Frenchtown (A) | 12 | Russ Plicher Top 10 |
| 4:35.63 | Isaiah Cowan | Missoula Big Sky (AA) | 10 | Greg Rice City Meet |
| 4:35.76 | Aidan Brown | Belgrade (AA) | 11 | Belgrade Tri |
| 4:35.86 | Paul Dannenberg | Billings West (AA) | 10 | Billings Public City Meet |
| 4:36.13 | Beau Johnston | Three Forks (B) | 12 | Southern B Divisional |
| 4:36.53 | Mason Genovese | Whitefish (A) | 11 | Western A Divisional |
| 4:37.06 | Brayden Lanser | Hamilton (A) | 9 | Western A Divisional |
| 4:37.66 | Colter Anderson | Sweet Grass Co./Big Timber (B) | 9 | Harlo/Park City Invite |
| 4:37.78 | James Plymale | Columbus (B) | 11 | State B Championship |
| 4:38.16 | Elias Vesbach | Columbus (B) | 11 | State B Championship |
| 4:38.31 | Clayton Jassen | Belt (C) | 11 | State C Championship |
| 4:38.36 | Dylan Hill | Helena (AA) | 9 | Great Falls-Helena Dual |
| 4:38.79 | Luke Nuttal | Corvallis (A) | 10 | Nelson-Thomas ABC Meet |
| 4:38.94 | Lucas Keith | Billings West (AA) | 9 | Eastern AA Divisional |
| 4:38.95 | John Spinti | Great Falls (AA) | 11 | Great Falls-Helena Dual |
| 4:39.18 | Jack Davidson | Corvallis (A) | 10 | Western A Divisional |
| 4:39.98 | Daniel Johnson | Bozeman (AA) | 11 | Eastern AA Divisional |
| 4:40.62 | Eli Heacock | Powder River Co./Broadus (C) | 11 | Southern C Divisional |
| 4:40.87 | Colter Howell | Denton-Geyser-Stanford (C) | 12 | Mustang Invitational |