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Greg Leffler - Results By Track/Series
Track
Series
Race/Speedweek
Year
Races: 15
Wins: 4
Top 5: 8
Top 10: 14
Payout: $0 (Note, could be incomplete)
Totals
| Races | Avg Finish | Wins | Top 5 | Top 10 | Money |
| 1980 | 1 | 10.0 | | | 1 | |
| 1979 | 2 | 2.5 | 1 | 2 | 2 | |
| 1978 | 3 | 3.0 | 1 | 2 | 3 | |
| 1977 | 3 | 5.3 | 1 | 1 | 3 | |
| 1976 | 4 | 7.0 | | 2 | 3 | |
| 1975 | 2 | 5.5 | 1 | 1 | 2 | |
Wins
Count: 4
| Race Date | Class | Series | Track | Race | Story |
| Monday, September 1, 1975 | Wingless | USAC | Illiana,IN | | Greg Leffler wins USAC at Illiana |
| Wednesday, August 31, 1977 | Wingless | USAC | Illiana,IN | | Greg Leffler wins USAC at Illiana |
| Saturday, July 29, 1978 | Wingless | USAC | Illiana,IN | | Greg Leffler wins USAC at Illiana |
| Saturday, July 7, 1979 | Wingless | USAC | Illiana,IN | | Greg Leffler wins USAC at Illiana |
Results
Count: 15
| Race Date | Class | Series | Track | Race | Finish | Time Trial |
| Saturday, August 9, 1975 | Wingless | USAC | Illiana,IN | | 10 | 13 |
| Monday, September 1, 1975 | Wingless | USAC | Illiana,IN | | 1 | 6 |
| Friday, June 11, 1976 | Wingless | USAC | Illiana,IN | | 13 | 12 |
| Friday, July 16, 1976 | Wingless | USAC | Illiana,IN | | 3 | 10 |
| Friday, August 6, 1976 | Wingless | USAC | Illiana,IN | | 2 | 6 |
| Friday, September 3, 1976 | Wingless | USAC | Illiana,IN | | 10 | 13 |
| Wednesday, July 6, 1977 | Wingless | USAC | Illiana,IN | | 7 | 10 |
| Wednesday, August 3, 1977 | Wingless | USAC | Illiana,IN | | 8 | 8 |
| Wednesday, August 31, 1977 | Wingless | USAC | Illiana,IN | | 1 | 5 |
| Saturday, June 3, 1978 | Wingless | USAC | Illiana,IN | | 6 | 1 |
| Saturday, July 29, 1978 | Wingless | USAC | Illiana,IN | | 1 | 4 |
| Friday, August 18, 1978 | Wingless | USAC | Illiana,IN | | 2 | 2 |
| Saturday, July 7, 1979 | Wingless | USAC | Illiana,IN | | 1 | 2 |
| Saturday, August 4, 1979 | Wingless | USAC | Illiana,IN | | 4 | 2 |
| Saturday, June 28, 1980 | Wingless | USAC | Illiana,IN | | 10 | 1 |
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