| Mark | School | Meet |
|---|
| 44.67 | Valley Christian (C) | Western B/C Divisional |
| 44.76 | Hot Springs (C) | Western B/C Divisional |
| 44.78 | Culbertson (C) | Norm Girard Top 10 Track Meet |
| 44.84 | Chester-Joplin-Inverness (C) | Mustang Invite |
| 44.95 | Plentywood (C) | Eastern C Divisional |
| 44.97 | Cascade (C) | Choteau Twilight Meet |
| 45.02 | Fort Benton (C) | 9C District Meet |
| 45.14 | Hobson-Moore (C) | 8C District Meet |
| 45.17 | Belt (C) | Choteau Acantha Invitational |
| 45.30 | Highwood (C) | 8C District Meet |
| 45.46 | Plentywood (C) | Fairview HS Invite |
| 45.46 | Denton-Geyser-Stanford (C) | Red Lodge Classic |