| Mark | Athlete | School | Year | Meet |
|---|
| 8:35.22 | Nathan Neil | Sea Level Times (SEALEVEL) | 12 | Arcadia Invitational (CA) |
| 8:53.19 | Nathan Neil | Bozeman (AA) | 12 | State AA Championship |
| 8:58.33 | Ryan Harrington | Sea Level Times (SEALEVEL) | 12 | Arcadia Invitational (CA) |
| 9:00.72 | Quinn Newman | Sea Level Times (SEALEVEL) | 12 | Arcadia Invitational (CA) |
| 9:12.18 | Quinn Newman | Missoula Sentinel (AA) | 12 | State AA Championship |
| 9:23.67 | Jeremy Posdon | Sea Level Times (SEALEVEL) | 12 | Nike/Jesuit Twilight Relays (OR) |
| 9:23.76 | Peyton Summers | Wolf Point (B) | 12 | Norm Girard North/East Top 10 |
| 9:25.09 | Ryan Harrington | Great Falls (AA) | 12 | State AA Championship |
| 9:25.15 | Miles Halvorsen | Bozeman (AA) | 10 | State AA Championship |
| 9:25.61 | Owen Thiel | Glacier (AA) | 10 | State AA Championship |
| 9:26.38 | Jeremy Posdon | Bozeman (AA) | 12 | State AA Championship |
| 9:28.95 | Oren Arthun | Manhattan Christian (C) | 12 | Gallatin Valley Invitational |
| 9:30.49 | Daniel Johnson | Sea Level Times (SEALEVEL) | 12 | Nike/Jesuit Twilight Relays (OR) |
| 9:30.85 | Grey Piseno | Billings Central (A) | 10 | Eastern A Divisional |
| 9:32.30 | Finn Schretenthaler | Park/Livingston (A) | 10 | State A Championship |
| 9:32.49 | Ben Bird | Hardin (A) | 9 | State A Championship |
| 9:35.33 | Mason Moler | Billings West (AA) | 12 | State AA Championship |
| 9:35.76 | Tyler Inabnit | Missoula Sentinel (AA) | 11 | State AA Championship |
| 9:37.47 | Luke Mest | Jefferson/Boulder (B) | 12 | Gallatin Valley Invitational |
| 9:38.57 | Caleb Tomac | Havre (A) | 12 | Havre Lions' Invitational |
| 9:38.93 | John Spinti | Great Falls (AA) | 12 | Great Falls Triangular |
| 9:41.82 | Taylor Neil | Bozeman (AA) | 9 | State AA Championship |
| 9:42.10 | Elliot Stimpson | Helena (AA) | 11 | State AA Championship |
| 9:42.18 | Kieran Anderson | Bozeman (AA) | 12 | State AA Championship |
| 9:43.12 | Jack Davidson | Corvallis (A) | 11 | MCPS Invitational |
| 9:43.89 | Taylor Doleac | Hamilton (A) | 10 | MCPS Invitational |
| 9:44.17 | Milo Kauffman | Helena (AA) | 9 | Helena Crosstown Meet |
| 9:47.97 | Daniel Johnson | Bozeman (AA) | 12 | Belgrade Triangular |
| 9:48.37 | Thomas Oylear | Powder River Co./Broadus (C) | 12 | Northern Hills Invite (SD) |
| 9:50.82 | Cass Violett | Three Forks (B) | 11 | Van Kuren Invitational (WA) |
| 9:51.38 | Lucas Keith | Billings West (AA) | 10 | State AA Championship |
| 9:52.29 | Dominic Hurlbert | Jefferson/Boulder (B) | 11 | State B Championship |
| 9:52.62 | Bryon Fanning | Three Forks (B) | 12 | Van Kuren Invitational (WA) |
| 9:53.31 | Emerson Hamma | Helena (AA) | 10 | Skor Dekam Invitational |
| 9:54.17 | Wilson Derry | Missoula Hellgate (AA) | 12 | State AA Championship |
| 9:55.52 | Henry Sund | Helena (AA) | 11 | State AA Championship |
| 9:56.92 | Ashtyn Rask | Great Falls (AA) | 12 | Helena Triangular |
| 9:57.05 | Kye Mcabee | Billings West (AA) | 10 | Billings Invite |
| 9:57.22 | Kyler Harris | Florence-Carlton (B) | 11 | Blue Devil Invitational |
| 9:57.29 | Odin Berryman | Missoula Hellgate (AA) | 10 | Archie Roe Invitational |
| 9:59.26 | Jorrin Grensten | Missoula Sentinel (AA) | 12 | Western AA Divisional |
| 9:59.27 | Gabe Ackerly | Glacier (AA) | 9 | Western AA Divisional |
| 9:59.54 | Bauer Hollman | Flathead (AA) | 12 | Swede Dahlberg Invitational |
| 9:59.74 | Dawson Parke | Drummond (C) | 9 | State C Championship |
| 10:00.19 | Jonas Kreitner | Glacier (AA) | 12 | Western AA Divisional |
| 10:00.98 | Jack Syverson | Glacier (AA) | 11 | Western AA Divisional |
| 10:02.78 | Eamon Fitzgerald | Missoula Hellgate (AA) | 11 | Western AA Divisional |
| 10:03.88 | Ethan Walker | Harlem (B) | 9 | State B Championship |
| 10:04.01 | Elias Vesbach | Columbus (B) | 12 | Gallatin Valley Invitational |
| 10:04.83 | Christian Landers | Bozeman (AA) | 10 | Skor Dekam Invitational |
| 10:04.86 | Trey Schlepp | Helena (AA) | 12 | State AA Championship |
| 10:05.06 | Mekhi Ladson | Lockwood (A) | 10 | Bill Kelly Twilight Invitational |
| 10:05.43 | Conrad Schruth | Great Falls (AA) | 11 | State AA Championship |
| 10:05.69 | Dylan Hill | Helena (AA) | 10 | Skor Dekam Invitational |
| 10:06.09 | Paul Dannenberg | Billings West (AA) | 11 | Billings City Meet |
| 10:06.80 | Aydin Jackson | Dawson Co./Glendive (A) | 12 | Bill Kelly Twilight Invitational |
| 10:07.90 | Taggart Jessop | Corvallis (A) | 10 | MCPS Invitational |
| 10:08.18 | Carter Heggem | Sidney (A) | 10 | Sidney Invitational |
| 10:08.25 | Auston Schellig | Joliet (B) | 10 | State B Championship |
| 10:08.57 | Brodie Tirrell | Belgrade (AA) | 12 | Skor Dekam Invitational |
| 10:09.32 | Jeremy Davidson | Corvallis (A) | 9 | Nelson-Thomas ABC Meet |
| 10:10.60 | Jackson Bontadelli | Polson (A) | 10 | State A Championship |
| 10:11.13 | River Racine | Browning (A) | 10 | Western A Divisional |
| 10:13.61 | Noah Miller | Billings Skyview (AA) | 11 | State AA Championship |
| 10:13.63 | Jacob Piapot | Ronan (A) | 11 | Western A Divisional |
| 10:14.85 | Aidan Brown | Belgrade (AA) | 12 | Gallatin Valley Invitational |
| 10:15.98 | Hayden Smith | Charlo (C) | 12 | State C Championship |
| 10:17.16 | Clayton Jassen | Belfry (C) | 12 | State C Championship |
| 10:20.09 | Scott Parke | Drummond (C) | 12 | Western C Divisional |