All available race results Ken Nakagawa
| Date | Race | Rank |
| Tour of Japan | ||
| 20/05 | Prologue | 61 |
| 21/05 | Stage 2 | 77 |
| 22/05 | Stage 3 | 41 |
| 23/05 | Stage 4 | 64 |
| 24/05 | Stage 5 | 61 |
| 25/05 | Stage 6 | 69 |
| 26/05 | Stage 7 | 54 |
| 27/05 | Stage 8 | 8 |
| General Classification | 56 |
Rider information for 2018
| Rank | 4157 |
| Score | 1 |
| Name | Ken NAKAGAWA |
| Country | Japan |
| Team | Elite without contract |
No results available in season 2019.
Rider information for 2019
| Rank | 4293 |
| Score | 1 |
| Name | Ken NAKAGAWA |
| Country | Japan |
| Team | Aisan Racing Team |
No results available in season 2020.
Rider information for 2020
| Rank | 3024 |
| Score | 0 |
| Name | Ken NAKAGAWA |
| Country | Japan |
| Team | Aisan Racing Team |
| Date | Race | Rank |
| 24/10 | National Championship Japan | 22 |
Rider information for 2021
| Rank | 4623 |
| Score | 0 |
| Name | Ken NAKAGAWA |
| Country | Japan |
| Team | Aisan Racing Team |
| Date | Race | Rank |
| Tour of Japan | ||
| 19/05 | Stage 1 | 58 |
| 20/05 | Stage 2 | 58 |
| 21/05 | Stage 3 | 7 |
| 22/05 | Stage 4 | 16 |
| General Classification | 49 | |
| 26/06 | National Championship Japan | 24 |
Rider information for 2022
| Rank | 5585 |
| Score | 0 |
| Name | Ken NAKAGAWA |
| Country | Japan |
| Team | Aisan Racing Team |