| Mark | Athlete | School | Year | Meet |
|---|
| 47.52 | Zander Mozer | Helena (AA) | 12 | State AA |
| 48.65 | Simon Petsch | Billings West (AA) | 12 | State AA |
| 49.66 | Micah Ans | Billings Senior (AA) | 11 | State AA |
| 49.68 | Dawson LaRance | Billings Senior (AA) | 12 | State AA |
| 49.90 | Jacob Grinwis | Belgrade (AA) | 12 | Senior Meet |
| 49.97 | Cade Johnstone | Forsyth (C) | 11 | Midland Roundtable Top Ten |
| 50.20 | Tyler Combs | Glacier (AA) | 12 | Western AA Divisional |
| 50.21 | Trace Jones | Sidney (A) | 12 | Jock Stop Meet |
| 50.22 | Micah Bucy | Flathead (AA) | 12 | Western AA Divisional |
| 50.39 | Mark Estes | Drummond (C) | 11 | State C |
| 50.53 | Drew Turner | Glacier (AA) | 11 | Flathead-Glacier Dual |
| 50.65 | Wade Luly | Shelby (B) | 12 | State B |
| 50.70 | Jake Jessop | Corvallis (A) | 11 | Western A Divisional |
| 50.75 | Scout Willcut | Glacier (AA) | 12 | State AA |
| 50.80 | Matthew Rensvold | Polson (A) | 12 | Western A Divisional |
| 50.87 | Bryar Lange | Savage (C) | 12 | 2C Districts |
| 50.95 | Owen Lepper | Wolf Point (B) | 12 | State B |
| 51.02 | Dylan Cervelli | Beaverhead Co./Dillon (A) | 10 | Western A Divisional |
| 51.03 | Kameron Rauser | Broadwater/Townsend (B) | 10 | State B |
| 51.12 | Dawson Rinehart | Flathead (AA) | 11 | Western AA Divisional |
| 51.21 | Damon Adams | Harlem (B) | 12 | State B |
| 51.30 | Jethro Thorne | Florence-Carlton (B) | 11 | Western B Divisional |
| 51.39 | Milo Carpenter | Billings West (AA) | 10 | Eastern AA Divisional |
| 51.42 | Korben Cossins | Bozeman (AA) | 11 | Eastern AA Divisional |
| 51.42 | Colin Marks | Park/Livingston (A) | 11 | Eastern A Divisional |
| 51.49 | Paul Johnstone | Forsyth (C) | 11 | John Polich Invitational |
| 51.53 | Bruce Thomas | Corvallis (A) | 12 | State A |
| 51.54 | Tyler Gurchiek | Billings West (AA) | 12 | Swede Dahlberg Invitational |
| 51.55 | Ryan Mock | Billings West (AA) | 12 | Billings City Meet |
| 51.55 | Brock Smith | Billings West (AA) | 10 | Eastern AA Divisional |
| 51.65 | Benji Phillips | Glasgow (B) | 12 | State B |
| 51.76 | Matt Farrier | Bigfork (A) | 12 | Western B Divisional |
| 51.76 | Ray Trudeau | Helena (AA) | 11 | State AA |
| 51.78 | Chandler Allen | Fairfield (B) | 12 | State B |
| 51.80 | Lucas Gibb | Billings West (AA) | 10 | Billings City Meet |
| 51.90 | Tyler Puddy | Missoula Sentinel (AA) | 12 | Western AA Divisional |
| 51.91 | Noah Smith | Broadwater/Townsend (B) | 12 | District 5B Meet |
| 51.92 | Justen Henke | Shelby (B) | 12 | 1B Districts |
| 51.93 | Tyler Cote | Whitefish (A) | 12 | Western A Divisional |
| 51.94 | Elijah Boyd | Glacier (AA) | 11 | Columbia Falls-Glacier Dual |
| 51.97 | Iain Anderson | Helena (AA) | 12 | CMR/Helena/Belgrade |
| 52.00 | Logan Nelson | Libby (B) | 12 | State B |