| HOME | 400 meters | 52 | |||
| Time | Converted/FAT | Name | School | Class | Year |
| 49.29 | Josh Pelczar | West | AA | 11 | |
| 49.39 | Kaleob Palmer | Butte | AA | 11 | |
| 49.45 | Bo McGurran | Cascade | B | 12 | |
| 50.4 | 49.55 | Zack Rowan | Libby | A | 12 |
| 49.56 | Seth Marshall | Laurel | A | 10 | |
| 49.89 | Chip Goodrich | Bozeman | AA | 11 | |
| 49.97 | Logan Mossey | Lewistown | A | 12 | |
| 49.98 | Presley Armstrong | Eureka | B | 12 | |
| 49.8 | 50.04 | Bryce Shows | Ennis | C | 12 |
| 50.10 | Brandon Pierce | Skyview | AA | 11 | |
| 50.19 | David Beery | Belgrade | A | 12 | |
| 51.1 | 50.32 | Myles Jessop | Corvalis | A | 12 |
| 51.2 | 50.52 | Bryce Carver | Dillon | A | 11 |
| 50.61 | Seth Long | Capital | AA | 12 | |
| 50.71 | Casey Lamping | Capital | AA | 12 | |
| 50.5 | 50.74 | Kazz Siewing | Hinsdale-Saco | C | 12 |
| 50.7 | 50.94 | Kruiz Siewing | Hinsdale-Saco | C | 12 |
| 50.98 | Sam Tedrow | Flathead | AA | 12 | |
| 51.08 | Anto Daoud | Whitefish | A | 10 | |
| 51.13 | Ryan Turley | Hamilton | A | 12 | |
| 50.9 | 51.14 | David Wilson | CMR | AA | 10 |
| 51.17 | Clay Pierson | Twin Bridges | C | 11 | |
| 51.21 | Craig Halko | Centerville | C | 12 | |
| 51.28 | Colt Kirkpatrick | Broadview-Lavina | C | 12 | |
| 51.29 | Tyler Patenaude | West | AA | 11 | |
| 51.32 | Charlie Dotson | Flathead | AA | 12 | |
| 51.1 | 51.34 | Evan Etchart | Glasgow | B | 11 |
| 51.37 | Tyzer Cady | Colstrip | B | 12 | |
| 51.44 | Patrick Casey | Laurel | A | 12 | |
| 51.45 | Derek Ohs | Glendive | A | 11 | |
| 51.45 | Matt Swan | Manhattan | B | 11 | |
| 51.54 | Loran Nelson | Libby | A | 12 | |
| 51.55 | Logan Torgison | Polson | A | 12 | |
| 51.68 | Jake Glasman | Glacier | AA | 11 | |
| 51.72 | Mahlone Jessop | Corvallis | A | 10 | |
| 51.77 | Tanner Leak | Columbus | B | 12 | |
| 51.6 | 51.84 | David Repke | Superior | C | 12 |
| 51.6 | 51.84 | Chad Wilson | Culbertson | C | 12 |
| 51.86 | Drew Owens | Big Sky | AA | 10 | |
| 51.86 | Evan Vujovich | Ennis | C | 11 | |
| 51.8 | 52.04 | Cole Hinnaland | Circle | C | 11 |
| 52.04 | Jordan Klatt | Senior | AA | 10 | |
| 52.07 | Fritz Mehling | West | AA | 12 | |
| 52.07 | Ryan Ketterling | Joliet | C | 11 | |