Info
| Last name | Dumanski |
| First name | Mason |
| Nationality |  United States |
| Date | Rank | Race |
|---|---|---|
| 24-07 | 63 | USA National Championship - XCO U19 (CN) |
| 11-06 | 42 | MTB XCO Missoula U19 (1) |
| 21-05 | 19 | Englewood Open U19 (1) |
| 08-05 | 45 | SoHo Bicycle Festival U19 (2) |
| 07-05 | 38 | SoHo Bicycle Festival U19 (2) |
| 24-04 | 29 | Moosejaw U.S. Pro Cup p/b OZ Trails U19 (1) |
| 20-04 | 25 | Moosejaw U.S. Pro Cup p/b OZ Trails U19 (1) |