Riverhead Road Race Course
22.75 Mile Road Course
Riverhead, New York
All races AAA sanctioned
| Race # | Date | Race | Miles | Winner |
| 1 | 9/29/1909 | Long Island Stock Car Derby Class A | 227.5 | Ralph DePalma |
| 2 | 9/29/1909 | Long Island Stock Car Derby Class B | 182 | Frank Lescault |
| 3 | 9/29/1909 | Long Island Stock Car Derby Class C | 136.5 | William Sharp |
| 4 | 9/29/1909 | Long Island Stock Car Derby Class D | 113.75 | Louis Chevrolet |
| 5 | 9/29/1909 | Long Island Stock Car Derby Class E | 91 | Arthur See |