| 400 meters | 52 | |||
| Time | Name | School | Class | Year |
| 48.81 | Ty Norris | Bozeman | AA | 11 |
| 49.24 | Mark Blackford | West | AA | 11 |
| 49.36 | Adam Michalson | Bozeman | AA | 12 |
| 49.72 | Michael Novotny | Big Timber | B | 11 |
| 49.77 | Luke Peterson | Hardin | A | 12 |
| 49.80 | Cody Henning | Whitefish | A | 10 |
| 50.05 | Alex Maetzold | Whitefish | A | 12 |
| 50.08 | Drew DuMont | Charlo | C | 12 |
| 50.12 | Mike Ferriter | Helena | AA | 10 |
| 50.15 | Mike Potts | Loyola | B | 12 |
| 50.23 | Kyle Samson | Capital | AA | 11 |
| 50.44 | Mike Doggett | Capital | AA | 11 |
| 50.48 | Patrick Cutler | Deer Lodge | B | 11 |
| 50.67 | Tyler Corwin | GFH | AA | 10 |
| 50.67 | Spencer Bird | Thompson Falls | B | 12 |
| 50.80 | Josh Schmidt | Whitefish | A | |
| 50.89 | Roger Larson | KG | C | 12 |
| 50.98 | Jacob Carr | Big Sky | AA | 12 |
| 51.11 | Loren Utterback | Fort Benton | B | 11 |
| 51.12 | Zach Vowell | Shelby | B | |
| 51.14 | Steve Heberly | Havre | A | 11 |
| 51.20 | Craig Talarico | Hellgate | AA | 12 |
| 51.22 | Manuel Jayden | Fairfield | B | |
| 51.30 | Matt Handwerk | GFH | AA | 12 |
| 51.31 | Dave Korell | Huntley-Project | B | |
| 51.35 | Brian Bachmeier | Arlee | C | 12 |
| 51.39 | Dallas Leslie | Billings Central | A | 12 |
| 51.40 | D.J. Lyngstad | Hamilton | A | |
| 51.43 | Tyler Lison | Baker | B | |
| 51.49 | Brandon Butler | Shields Valley | C | 11 |
| 51.58 | Brandon Birkley | Circle | C | 11 |
| 51.70 | Rex Ripley | Shepherd | B | 11 |
| 51.70 | Cody Feasel | Superior | C | 12 |
| 51.89 | Tyler Kennedy | Belgrade | A | 12 |
| 51.90 | Derik Thompson | Columbia Falls | A | |
| 51.90 | Matt Schmasow | Sentinel | AA | 10 |
| 51.96 | Kasey Kruger | Miles City | A | |
| 51.99 | Todd Zeidler | Plentywood | B | |
| 52.00 | Devon Beston | Kalispell | AA | 12 |
| 52.11 | Brian Skattiem | Livingston | A | |