All available race results R. Harker
| Date | Race | Rank |
| 02/10 | Warrnambool - Melbourne | 115 |
Rider information for 1909
| Rank | 1282 |
| Score | 0 |
| Name | R. HARKER |
| Country | Australia |
| Team | Individual |
| Date | Race | Rank |
| 01/10 | Warrnambool - Melbourne | 121 |
Rider information for 1910
| Rank | 859 |
| Score | 0 |
| Name | R. HARKER |
| Country | Australia |
| Team | Individual |
| Date | Race | Rank |
| 14/10 | Warrnambool - Melbourne | 34 |
Rider information for 1911
| Rank | 1012 |
| Score | 0 |
| Name | R. HARKER |
| Country | Australia |
| Team | Individual |
| Date | Race | Rank |
| 16/11 | Barnet Glass Road Race | 40 |
Rider information for 1912
| Rank | 970 |
| Score | 0 |
| Name | R. HARKER |
| Country | Australia |
| Team | Individual |