Info
| Last name | Koshiyama |
| First name | Masahiro |
| Nationality |  Japan |
| Date of birth | 10-04-1986 |
| Age | 39 |
| Date | Rank | Race |
|---|---|---|
| 10-12 | 60 | Japan National Championships (CN) |
| 26-11 | 58 | Rapha Supercross Nobeyama - Day 2 (C2) |
| 25-11 | 67 | Rapha Supercross Nobeyama - Day 1 (C2) |
| 19-11 | 64 | KANSAI Cyclo Cross Makino Round (C2) |
| 09-10 | 71 | Ibaraki Cyclo-cross Toride round (C2) |