| Mark | Athlete | School | Year | Meet |
|---|
| 11:27.39 | Kyla Meissner | Broadwater/Townsend (B) | 10 | Manhattan Christian Invite |
| 11:55.99 | Ruthanne Bowen | Manhattan (B) | 11 | Midland Roundtable Top 10 |
| 11:57.56 | Ashlyn Ford | Chinook (B) | 10 | Havre High Lion's Invite |
| 12:10.90 | Marina Tulloch | Plains (B) | 10 | Western B/C Divisional |
| 12:12.71 | Neva Lowe | Chinook (B) | 11 | Norm Girard Top 10 Track Meet |
| 12:17.63 | Della Sebring | Manhattan (B) | 11 | Al Walker Memorial Meet |
| 12:19.83 | Aeris Stewart | Shelby (B) | 10 | Northern B Divisional |
| 12:20.56 | Ella Miller | Manhattan (B) | | Gallatin Valley Invite |