SATURDAY, AUGUST 19, 2006
Race 1A (10 Laps) Group 1A Pre-1940 Sports, Touring & Racing Cars
Race 2A (10 Laps) Group 2A 1947-1955 Sport Racing and Prod. Cars under 2000cc
Race 3A (10 Laps) Group 3A 1951-1963 Formula Jr. & FIII cars
Race 4A (10 Laps) Group 4A 1955-1960 Sports Racing Cars over 2500cc
Race 5A (10 Laps) Group 5A 1955-1965 Formula F-1 & F-2 Cars
Race 6A (10 Laps) Group 6A 1966-1972 Historic Trans-Am Cars
Race 7A (10 Laps) Group 7A 1966-1977 Historic F-1 Cars.

SUNDAY, AUGUST 20, 2006
Race 1B (10 Laps) Group 1B 1947-1955 Sport Racing Cars over 2000cc
Race 2B (10 Laps) Group 2B 1956-1960 Sports Racing Cars under 2500cc
Race 3B (10 Laps) Group 3B 1959-1965 Sports Racing Cars
Race 4B (10 Laps) Group 4B 1955-1962 Prod. Sports Cars
Race 5B (10 Laps) Group 5B 1963-1966 Prod. Sports Cars
Race 6B (10 Laps) Group 6B 1965-1972 FIA Mfg. Championship Cars
Race 7B (10 Laps) Group 7B 1970-1980 Historic IMSA GT Cars