All available race results Hiroyuki Kobayashi
| Date | Race | Rank |
| Tour de Kumano | ||
| 30/05 | Prologue | 82 |
| 31/05 | Stage 1 | 83 |
Rider information for 2019
| Rank | 6366 |
| Score | 0 |
| Name | Hiroyuki KOBAYASHI |
| Country | Japan |
| Team | Elite without contract |
| Date | Race | Rank |
| Tour of Japan | ||
| 28/05 | Stage 1 | 43 |
| 29/05 | Stage 2 | 49 |
| 30/05 | Stage 3 | 65 |
| General Classification | 50 | |
| 24/10 | National Championship Japan | 47 |
Rider information for 2021
| Rank | 5371 |
| Score | 0 |
| Name | Hiroyuki KOBAYASHI |
| Country | Japan |
| Team | Elite without contract |