thumb|Sonoman rata. Sonoman Grand Prix 2004 oli American Le Mans Series -kauden 2004 neljäs osakilpailu, joka ajettiin 18. heinäkuuta Sonoma Racewayn moottoriradalla Kaliforniassa Yhdysvalloissa.
Kilpailun voitti Audilla ajaneet Marco Werner ja Jyrki Järvilehto.
Tulokset Sija Luokka Nro Talli Kuljettaja Auto Renkaat Kierrokset Moottori 1 LMP1 38 ADT Champion Racing Marco Werner JJ Lehto Audi R8 107 Audi 3.6L Turbo V8 2 LMP1 20 Dyson Racing Chris Dyson Andy Wallace MG-Lola EX257 107 MG (AER) XP20 2.0L Turbo I4 3 LMP1 16 Dyson Racing Butch Leitzinger James Weaver MG-Lola EX257 104 MG (AER) XP20 2.0L Turbo I4 4 GTS 3 Corvette Racing Ron Fellows Johnny O'Connell Chevrolet Corvette C5-R 102 Chevrolet LS7-R 7.0L V8 5 LMP2 30 Intersport Racing Jon Field Clint Field Robin Liddell Lola B2K/40 102 Judd KV675 3.4L V8 6 LMP2 10 Miracle Motorsports Ian James James Gue Lola B2K/40 100 Nissan (AER) VQL 3.0L V6 7 LMP2 56 Team Bucknum Racing Jeff Bucknum Bryan Willman Chris McMurry Pilbeam MP91 98 Nissan (AER) VQL 3.0L V6 8 GT 23 Alex Job Racing Jörg Bergmeister Timo Bernhard Porsche 911 GT3-RSR 98 Porsche 3.6L Flat-6 9 GT 45 Flying Lizard Motorsports Johannes van Overbeek Darren Law Porsche 911 GT3-RSR 98 Porsche 3.6L Flat-6 10 GT 24 Alex Job Racing Marc Lieb Romain Dumas Porsche 911 GT3-RSR 98 Porsche 3.6L Flat-6 11 GT 35 Risi Competizione Anthony Lazzaro Ralf Kelleners Ferrari 360 Modena GTC 97 Ferrari 3.6L V8 12 GT 66 New Century - The Racer's Group Patrick Long Cort Wagner Porsche 911 GT3-RSR 96 Porsche 3.6L Flat-6 13 GT 79 J-3 Racing Justin Jackson Tim Sugden Porsche 911 GT3-RSR 95 Porsche 3.6L Flat-6 14 GT 60 P.K. Sport Hugh Plumb Peter Boss Porsche 911 GT3-RS 92 Porsche 3.6L Flat-6 15 GT 44 Flying Lizard Motorsports Seth Neiman Lonnie Pechnik Porsche 911 GT3-RSR 92 Porsche 3.6L Flat-6 16 GTS 6 Krohn-Barbour Racing Tracy Krohn David McEntee Lamborghini Murciélago R-GT 90 Lamborghini 6.0L V12 17 GT 50 Panoz Motor Sports Gunnar Jeannette David Saelens Panoz Esperante GT-LM 88 Ford (Élan) 5.0L V8 18 GTS 4 Corvette Racing Oliver Gavin Olivier Beretta Chevrolet Corvette C5-R 86 Chevrolet LS7-R 7.0L V8 19 GT 31 White Lightning Racing Craig Stanton David Murry Porsche 911 GT3-RSR 85 Porsche 3.6L Flat-6 20 GTS 71 Carsport America Tom Weickardt Jean-Philippe Belloc Dodge Viper GTS-R 75 Dodge 8.0L V10 21DNF GT 67 New Century - The Racer's Group Jim Matthews Pierre Ehret Porsche 911 GT3-RSR 52 Porsche 3.6L Flat-6 22DNF GTS 5 Krohn-Barbour Racing Peter Kox David Brabham Lamborghini Murciélago R-GT 15 Lamborghini 6.0L V12 23DNF GT 43 BAM! Leo Hindery Lucas Luhr Porsche 911 GT3-RSR 15 Porsche 3.6L Flat-6 24DSQ GTS 63 ACEMCO Motorsports Terry Borcheller Johnny Mowlem Saleen S7-R 58 Ford 7.0L V8 DNS GTS 8 Corvette Racing Dale Earnhardt, Jr. Boris Said Chevrolet Corvette C5-R - Chevrolet LS7-R 7.0L V8
Luokka:Sonoman Grand Prix Luokka:American Le Mans Series -kausi 2004