All available race results Stanisław Gronczewski
| Date | Race | Rank |
| Bieg Dookoła Polski / Tour of Poland | ||
| 10/09 | Stage 4 | 3 |
| 12/09 | Stage 5 | 8 |
| 13/09 | Stage 6 | 7 |
| 15/09 | Stage 7 | 8 |
| 16/09 | Stage 8 | 6 |
| 16/09 | General Classification | 5 |
Rider information for 1928
| Rank | 248 |
| Score | 108 |
| Name | Stanisław GRONCZEWSKI |
| Country | Poland |
| Team | Individual |
| Date | Race | Rank |
| Bieg Dookoła Polski / Tour of Poland | ||
| 18/08 | General Classification | 18 |
Rider information for 1929
| Rank | 790 |
| Score | 10 |
| Name | Stanisław GRONCZEWSKI |
| Country | Poland |
| Team | Individual |