We are currently reviewing the groups for 2021. If you have a vehicle you'd like to have considered for the 2021 Sonoma Speed Festival please email us at drivers@sonomaspeedfestival.com. Thank you!

The vehicle options listed below per Group are recommended examples, however each Group is not limited to these makes and models. Please address all inquiries within your registration application.

RACE GROUP 1

1924 – 1939 Pre-War Sports Racing Cars
(Class 1)

Alfa Romeo | Aston-Martin | Bentley | Bugatti | BMW | Chrysler | Delage | Delahaye | HRG | Invicta | Lagonda | Maserati | MG Mercedes-Benz | Railton | Riley | SS/Jaguar | Talbot

See the 2019 Race Group 1932-1952 Pre-War Grand Prix Cars on track.

RACE GROUP 2

1948 – 1957 Sports & Sports Racing Cars
(Class 2A)

Alfa Romeo 6C | Aston-Martin DB2, DB3 | Allard | Cunningham C2R, C4R Frazer Nash | Ferrari 166, 195, 212, 340 | Gordini T-15 | Jowett Jupiter DB Sport | Jaguar XK120, C-type | Lancia B20 | Maserati A6GCS | Mercedes-Benz | Porsche 356 | Siata 208

1948 – 1957 Sports & Sports Racing Cars
(Class 2B)

Aston Martin DB3S, DBR2 | Alfa Romeo 6C-3000 | Austin-Healey 100, 100S | Bristol 450 | Cunningham C5R, C6R | Cooper T39 | DB HBR | Ferrari 340, 375MM, 750 Monza, 121LM, 625LM, 500TR, TRC, 290MM, 335S | Jaguar D type | Lancia D20 | Lotus Mk9, Mk11 | Mercedes-Benz 300SL | Maserati 200S, 300S, 450S | Nash-Healey | OSCA MT4 | Pegaso Z102 | Porsche 550, 550RS, 718 RSK, 356 Carrera | Talbot-Lago Sport, T26 GS

See the 2019 Race Group 1949-1954 Sports Production Cars on track.

RACE GROUP 3

1957 – 1961 Sports Racing Cars
(Class 3A)

Aston Martin DBR1 | Cooper T57 | DB HBR-4/5 | Echidna | Ferrari 250 TR, TR59/60/61, 330 TRLM, 196S, 246S | Lotus 11, 15, 17 | Lola Mk1 | Lister-Jaguar | Maserati 300S, T-60, T-61, T-63 | OSCA TN | Porsche RS60, RS61 | Scarab | Tojeiro-Jaguar

See the 2019 Race Group 1955-1960 Sports Racing Cars on track.

RACE GROUP 4

1971 – 1979 Formula Atlantic Cars
(Class 4)

Brabham | Chevron | Lola | March | Ralt


RACE GROUP 5

1957 – 1965 Production GT Cars over 2.5L
(Class 5A)

Aston Martin DB4GTZ, DP 212 | Bizzarrini GT | Corvette Stingray C2/FIA -Ferrari 250 GT, GTO, 250LM, 275 GTB | ISO Rivolta, Grifo A3C | Jaguar E-Type, | Shelby Cobra 289, Daytona | Sunbeam Tiger

See the 2019 Race Group 1959-1965 Production/GT cars up to 5L on track.

RACE GROUP 6

1962 – 1972 FIA Prototypes & SCCA Sports Racing
(Class 6A)

Alpine A210, 220 | Chevron B-8, B-16 | Corvette L88 Ferrari 250P, 275P, 330P, 330LMB, 275P2, 365P2, Dino 206S, 330P3, P4 | Ford GT-40, MkII, MkIV | Maserati T151, T154 -Matra 620 | CD SP66 | Porsche 904/6, 718/8, 906, 911S, 907/6, 908

1962 – 1972 FIA Prototypes & SCCA Sports Racing
(Class 6B)

Alfa Romeo T33/2, T33/3, T33TT12 | Chevron B19, B21, B23, B31, B36 | DeCadenet LM | Ferrari 312, 512, 312PB | Ligier JS/2 | Lola T70, T280, T282, T284, T290 | March 75S | Matra MS670, 680 | Gulf-Mirage M6, M7, M8 | IBEC P6 | Lola T294, T296, T297, T298, T380, T600 | Osella PA5, PA6, PA8 Porsche 908, 910/6, 917, Turbo RSR, 911 Carrera RSR, 911 Carrera Renault-Alpine A310, A441, A442, A443 | Rondeau M378, M379 | TOJ SC206, SM01 | WM P76/P81

See the 2019 Race Group 1964-1973 FIA Manufacturers Championship cars on track.

RACE GROUP 7

1957 – 1965 Production GT under 2.5L
(Class 5B)

Abarth-Simca, Alfa Romeo GSZ, GTZ, GTZII, Alpine A110 | Elva GT160-BMW | Fiat-Abarth | Lotus Elan | MGB-GT | Porsche-Abarth GT, 904GTS

1957 – 1965 Production GT under 2.5L
(Class 3B)

AC Ace, Bristol | Austin-Healey Sebring Sprite | Alfa Romeo Giulietta, SZ | Lotus Elite | MGA | Peerless GT | Porsche 356 | Triumph TR3/4

See the 2019 Race Group 1965-1969 Production Cars under 2.5L on track.

RACE GROUP 8

Historic Formula One 1966 – 1981
(Class 7)

1966 – 1977 3-liter Formula One Cars

Historic Formula One 1966 – 1981
(Class 7)

1977 – 1981 3-Liter Formula One Cars

See the 2019 Race Group 1966-1985 Masters Historics Formula One Cars on the track.

RACE GROUP 9

1966 – 1981 IMSA GT, GTX, AAGT - FIA Grp. 4
(Class 6A/7A)

BMW 3.0/3.5 CSL | Chevrolet Camaro, Corvette L88 | Ferrari 365GTB/4 | Ford Mustang | Inaltera GT | Lancia Beta Montecarlo | Porsche 911S, 914/6, Carrera RS, Carrera RSR, 934

1966 – 1981 IMSA GT, GTX, AAGT - FIA Grp. 4
(Class 7B)

BMW 320i, M1 | Corvette, Greenwood Corvette | Dekon Monza | Datsun 240Z, 280Z | Ferrari 512 BBLM, Ford Capri | Porsche 935 | Toyota Celica | Triumph TR8

See the 2019 Race Group 1971-1980 IMSA Camel GT Cars on the track.

RACE GROUP 10

1981 – 1990 IMSA GTP/GTP Lites, World Championship Grp. C
1981 – 1990 FIA Grp. C

RACE GROUP 11

1966 – 1972 Historic Trans-Am Cars

EXHIBITION RACES

1907 – 1920 Pre-War “Rag Time Racers”

Alco | Alfa Romeo | Benz | Buick | Bugatti | Duesenberg | Fiat | Ford Hispano-Suiza | Isotta-Fraschini | Lancia | Marmon | Mercedes | Mercer | National | Packard | Peugeot | Renault | Stutz

1964 – 1967 LeMans World Sportscar Championship

Alpine Renault M64, M65, A210 | Ford GT40, MkII, MkIV | Dino 206 | Ferrari 275P, 330P, 275LM, 275P2, 330P2, 365P2, 330P3, 330P4, 412P | Matra BRM M620, M630 | Maserati T151, T154 | Porsche 904/6, 904/8, 906/6, 907/6, 910/6 | Serenissima Spyder, Lola-Aston T70 MkIII

CLOSE THE MENU