All available race results R.L. Threlfall
| Date | Race | Rank |
| 09/06 | Anfield 100 Invitational | 46 |
Rider information for 1930
| Rank | 1417 |
| Score | 0 |
| Name | R.L. THRELFALL |
| Country | Great Britain |
| Team | Individual |
| Date | Race | Rank |
| 25/05 | Anfield 100 Invitational | 39 |
Rider information for 1931
| Rank | 1515 |
| Score | 0 |
| Name | R.L. THRELFALL |
| Country | Great Britain |
| Team | Individual |