All available race results Roman Siemiński
| Date | Race | Rank |
| Wyścig Dookoła Polski / Tour of Poland | ||
| 22/07 | Stage 1 | 8 |
| 23/07 | Stage 2 | 8 |
Rider information for 1939
| Rank | 923 |
| Score | 8 |
| Name | Roman SIEMIŃSKI |
| Country | Poland |
| Team | Individual |
| Date | Race | Rank |
| Wyścig Dookoła Polski / Tour of Poland | ||
| 26/09 | Stage 2 | 8 |
| 27/09 | Stage 3 | 1 |
| 28/09 | Stage 4 | 5 |
| General Classification | 12 |
Rider information for 1947
| Rank | 511 |
| Score | 51 |
| Name | Roman SIEMIŃSKI |
| Country | Poland |
| Team | Individual |
| Date | Race | Rank |
| Závod Míru / Peace Race | ||
| 02/05 | Stage 2 | 7 |
| 03/05 | Stage 3 | 6 |
| 05/05 | Stage 5 | 2 |
| 05/05 | General Classification | 2 |
Rider information for 1948
| Rank | 304 |
| Score | 158 |
| Name | Roman SIEMIŃSKI |
| Country | Poland |
| Team | Individual |
| Date | Race | Rank |
| Wyścig Pokoju / Závod Míru / Friedensfahrt | ||
| 07/05 | Stage 6 | 10 |
| 09/05 | General Classification | 16 |
| Wyścig Dookoła Polski / Tour of Poland | ||
| General Classification | 18 |
Rider information for 1949
| Rank | 751 |
| Score | 26 |
| Name | Roman SIEMIŃSKI |
| Country | Poland |
| Team | Individual |
| Date | Race | Rank |
| Wyścig Pokoju / Závod Míru / Friedensfahrt | ||
| 09/05 | General Classification | 22 |
Rider information for 1950
| Rank | 1159 |
| Score | 5 |
| Name | Roman SIEMIŃSKI |
| Country | Poland |
| Team | Individual |