All available race results Ryoma Watanabe
| Date | Race | Rank |
| 10/10 | Oita Urban Classic Road Race | 23 |
Rider information for 2021
| Rank | 4424 |
| Score | 0 |
| Name | Ryoma WATANABE |
| Country | Japan |
| Team | Elite without contract |
| Date | Race | Rank |
| Tour de Kumano | ||
| 27/05 | Stage 1 | 78 |
| 28/05 | Stage 2 | 64 |
Rider information for 2022
| Rank | 6953 |
| Score | 0 |
| Name | Ryoma WATANABE |
| Country | Japan |
| Team | Elite without contract |
| Date | Race | Rank |
| Tour de Kumano | ||
| 03/06 | Stage 1 | 79 |
Rider information for 2023
| Rank | 6529 |
| Score | 0 |
| Name | Ryoma WATANABE |
| Country | Japan |
| Team | VC Fukuoka |
| Date | Race | Rank |
| 25/02 | Tour of Alanya | 60 |
| 02/03 | G.P. Syedra Ancient City | 32 |
Rider information for 2024
| Rank | 4915 |
| Score | 0 |
| Name | Ryoma WATANABE |
| Country | Japan |
| Team | VC Fukuoka |