| Mark | Athlete | School | Year | Meet |
|---|
| 4:14.03 | Elliot Stimpson | Sea Level Times (SEALEVEL) | 12 | Arcadia Invitational (CA) |
| 4:15.27 | Henry Sund | Sea Level Times (SEALEVEL) | 12 | Arcadia Invitational (CA) |
| 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 |
| 4:18.80 | Taylor Wanner | Lockwood (A) | 12 | Sidney Twilight Meet |
| 4:19.47 | Dylan Hill | Sea Level Times (SEALEVEL) | 11 | Tiger Invitational (CA) |
| 4:19.68 | Dylan Hill | Helena (AA) | 11 | Sentinel/Helena/Belgrade Tri |
| 4:19.89 | Simon Douglas | Whitefish (A) | 12 | Nelson-Thomas ABC Meet |
| 4:20.32 | Jonah Njos | Lockwood (A) | 11 | Sidney Twilight Meet |
| 4:20.76 | Finn Schretenthaler | Park/Livingston (A) | 11 | Eastern A Divisional |
| 4:21.36 | Emerson Hamma | Great Falls CMR (AA) | 11 | Skor Dekam Invite |
| 4:21.49 | Ben Bird | Hardin (A) | 10 | Sidney Twilight Meet |
| 4:23.74 | Milo Kauffman | Helena (AA) | 10 | Skor Dekam Invite |
| 4:23.85 | Kye McAbee | Billings West (AA) | 11 | Eastern AA Divisional |
| 4:24.35 | Auston Schellig | Joliet (B) | 11 | State B/C Championship |
| 4:24.68 | Grey Piseno | Billings Central (A) | 11 | Midland Roundtable Top 10 |
| 4:25.04 | David DiGiallonardo | Polson (A) | 11 | Nelson-Thomas ABC Meet |
| 4:25.45 | Kyler Harris | Florence-Carlton (B) | 12 | Western B/C Divisional |
| 4:25.64 | Jack Davidson | Corvallis (A) | 12 | Western A 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 |
| 4:27.82 | Cass Violett | Three Forks (B) | 12 | State B/C Championship |
| 4:28.58 | Jaden Silha | Dawson Co./Glendive (A) | 12 | Eastern A Divisional |
| 4:28.66 | Miles Joseph Miller | Missoula Hellgate (AA) | 10 | Western AA Divisional |
| 4:29.08 | Samuel Jagodzinski | Billings Central (A) | 12 | Glendive Shriners Invitational |
| 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 |
| 4:29.61 | CJ Pijanowski | Florence-Carlton (B) | 12 | Western B/C Divisional |
| 4:29.66 | Taylor Doleac | Hamilton (A) | 11 | Western A Divisional |
| 4:30.02 | Garrett Hinderman | Helena (AA) | 11 | Western AA Divisional |
| 4:30.31 | Eamon Fitzgerald | Missoula Hellgate (AA) | 12 | Western AA Divisional |
| 4:30.42 | River Racine | Browning (A) | 11 | Western A Divisional |
| 4:30.68 | Branlin Foote | Bozeman (AA) | 10 | Eastern AA Divisional |
| 4:31.09 | Isaiah Hudson | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 4:31.42 | Keaton Sample | Colstrip (B) | 11 | State B/C Championship |
| 4:31.74 | Lucas Keith | Billings West (AA) | 11 | Eastern AA Divisional |
| 4:31.81 | Ethan Walker | Harlem (B) | 9 | State B/C Championship |
| 4:31.90 | Colter Anderson | Sweet Grass Co./Big Timber (B) | 11 | 4B District Meet |
| 4:32.38 | Gabe Ackerly | Glacier (AA) | 10 | Russ Plicher Western Top 10 |
| 4:32.39 | Nolan Flynn | Broadwater/Townsend (B) | 12 | State B/C Championship |
| 4:32.61 | Noah Njos | Dawson Co./Glendive (A) | 12 | Sidney Twilight Meet |
| 4:33.51 | John Jermyn | Plains (B) | 9 | Western B/C Divisional |
| 4:34.22 | Harlon Leishman | St. Ignatius (B) | 12 | Seeley-Swan Invitational |
| 4:35.01 | Shaphan Hubner | Manhattan Christian (C) | 12 | KLH Memorial Track Meet |
| 4:35.16 | Drake Fricke | Bozeman (AA) | 12 | Midland Roundtable Top 10 |
| 4:35.25 | Jacob Piapot | Ronan (A) | 12 | Nelson-Thomas ABC Meet |
| 4:35.34 | Noah Miller | Billings Skyview (AA) | 12 | Eastern AA Divisional |
| 4:35.71 | Kayden Stewart | Hardin (A) | 11 | Sidney Twilight Meet |
| 4:35.72 | Bryson Poulsen | Hamilton (A) | 12 | Nelson-Thomas ABC Meet |
| 4:35.76 | Jack Baumes | Missoula Hellgate (AA) | 12 | Russ Plicher Western Top 10 |
| 4:35.78 | Warner Bowman | Hardin (A) | 10 | Sidney Twilight Meet |
| 4:35.89 | Cody Watson | Libby (A) | 10 | Western A Divisional |
| 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 |
| 4:36.24 | Prestyn Klatt | Lustre Christian (C) | 10 | State B/C Championship |
| 4:36.29 | Carter Koerner | Corvallis (A) | 11 | Nelson-Thomas ABC Meet |
| 4:36.50 | Ben Martin | Darby (B) | 10 | State B/C Championship |
| 4:36.64 | Trent Lane | Cascade (C) | 10 | State B/C Championship |
| 4:36.73 | Taggart Jessop | Corvallis (A) | 11 | Western A Divisional |
| 4:36.81 | Jake Matthews | Helena (AA) | 12 | Helena Small Schools Invite |
| 4:37.16 | Ashyr Tweet | Fairfield (B) | 10 | Seeley-Swan Invitational |
| 4:37.18 | Cord Greer | Plains (B) | 9 | Western B/C Divisional |
| 4:37.92 | Mica Kantor | Missoula Sentinel (AA) | 10 | Western AA Divisional |
| 4:38.01 | Dawson Parke | Drummond (C) | 10 | State B/C Championship |
| 4:38.05 | Peyton Johnson | Cascade (C) | 10 | KLH Memorial Track Meet |
| 4:38.18 | Noah Hamilton-Dixon | Bigfork (A) | 11 | Western A Divisional |
| 4:38.36 | Gabriel Rock | Billings Skyview (AA) | 10 | Eastern AA Divisional |
| 4:38.64 | Cavan Visser | Manhattan Christian (C) | 12 | State B/C Championship |
| 4:38.69 | Cody Watson | Libby (A) | 10 | Whitefish ARM Invitational |
| 4:38.75 | Reid Bartholomew | Gallatin (Bozeman) (AA) | 11 | Last Chance Qualifier |
| 4:39.26 | Chandler Christensen | Billings Skyview (AA) | 12 | Billings City Meet |
| 4:39.31 | Braden Anderson | Corvallis (A) | 9 | Western A Divisional |
| 4:39.65 | Jack Syverson | Glacier (AA) | 12 | CMR/Glacier Dual |
| 4:40.00 | River Blazejewski | Columbia Falls (A) | 11 | Western A Divisional |