| Mark | School | Meet |
|---|
| 4:02.11 | Loyola Sacred Heart (B) | State B Championship |
| 4:05.65 | Huntley Project (B) | Midland Roundtable Top 10 |
| 4:12.38 | Three Forks (B) | State B Championship |
| 4:14.33 | Manhattan (B) | Midland Roundtable Top 10 |
| 4:14.88 | Fairview (B) | State B Championship |
| 4:14.96 | Darby (B) | State B Championship |
| 4:15.27 | Anaconda (B) | Western B Divisional |
| 4:15.74 | Sweet Grass Co./Big Timber (B) | State B Championship |
| 4:16.34 | Florence-Carlton (B) | State B Championship |
| 4:16.68 | Broadwater/Townsend (B) | State B Championship |
| 4:19.32 | Jefferson/Boulder (B) | Gallatin Valley Invitational |
| 4:19.68 | Glasgow (B) | Norm Girard North/East Top 10 |
| 4:19.99 | Columbus (B) | Red Lodge Invitational |
| 4:20.37 | Cut Bank (B) | State B Championship |
| 4:21.20 | Joliet (B) | Al Walker Memorial Meet |