The 2004 Grand Prix of Road America was the eighth round of the 2004 Bridgestone Presented the Champ Car World Series Powered by Ford season, held on August 8, 2004 at Road America in Elkhart Lake, Wisconsin. Sébastien Bourdais won the pole and Alex Tagliani won the race, his first and only win in his Champ Car/IndyCar career.

Qualifying results

Pos	Nat	Name	Team	Qual 1	Qual 2	Best
1		Sébastien Bourdais	Newman/Haas Racing	1:44.637	1:43.046	1:43.046
2		Ryan Hunter-Reay	Herdez Competition	1:43.909	1:43.995	1:43.909
3		Jimmy Vasser	PKV Racing	—	1:43.374	1:43.374
4		Bruno Junqueira	Newman/Haas Racing	1:44.529	1:43.606	1:43.606
5		Patrick Carpentier	Forsythe Racing	1:44.076	1:43.753	1:43.753
6		Paul Tracy	Forsythe Racing	1:46.382	1:43.933	1:43.933
7		A. J. Allmendinger	RuSPORT	1:44.972	1:44.058	1:44.058
8		Oriol Servià	Dale Coyne Racing	1:45.077	1:44.105	1:44.105
9		Justin Wilson	Mi-Jack Conquest Racing	1:45.034	1:44.463	1:44.463
10		Rodolfo Lavín	Forsythe Racing	1:45.269	1:44.663	1:44.663
11		Michel Jourdain Jr.	RuSPORT	1:45.377	1:44.708	1:44.708
12		Mario Haberfeld	Walker Racing	1:45.773	1:45.074	1:45.074
13		Alex Tagliani	Rocketsports Racing	—	1:45.172	1:45.172
14		Roberto González	PKV Racing	1:45.674	1:45.361	1:45.361
15		Mario Domínguez	Herdez Competition	1:45.496	1:47.701	1:45.496
16		Guy Smith	Rocketsports Racing	1:47.948	1:46.025	1:46.025
17		Alex Sperafico	Mi-Jack Conquest Racing	1:46.742	1:46.321	1:46.321
18		Gastón Mazzacane	Dale Coyne Racing	1:46.878	1:47.042	1:46.878

Race

Pos	No	Driver	Team	Laps	Time/Retired	Grid	Points
1	8	Alex Tagliani	Rocketsports Racing	48	1:45:07.288	13	33
2	3	Rodolfo Lavín	Forsythe Racing	48	+1.855 secs	10	28
3	2	Sébastien Bourdais	Newman/Haas Racing	48	+2.767 secs	1	27
4	4	Ryan Hunter-Reay	Herdez Competition	48	+3.814 secs	2	24
5	55	Mario Domínguez	Herdez Competition	48	+4.398 secs	15	21
6	11	Oriol Servià	Dale Coyne Racing	48	+6.390 secs	8	19
7	34	Justin Wilson	Mi-Jack Conquest Racing	48	+8.500 secs	9	17
8	12	Jimmy Vasser	PKV Racing	48	+8.546 secs	3	15
9	9	Michel Jourdain Jr.	RuSPORT	48	+9.056 secs	11	13
10	17	Guy Smith	Rocketsports Racing	48	+9.997 secs	16	11
11	5	Mario Haberfeld	Walker Racing	48	+16.725 secs	12	10
12	1	Paul Tracy	Forsythe Racing	48	+26.616 secs	6	10
13	10	A. J. Allmendinger	RuSPORT	47	+ 1 Lap	7	8
14	7	Patrick Carpentier	Forsythe Racing	46	+ 2 Laps	5	7
15	6	Bruno Junqueira	Newman/Haas Racing	46	+ 2 Laps	4	7
16	21	Roberto González	PKV Racing	46	+ 2 Laps	14	5
17	14	Alex Sperafico	Mi-Jack Conquest Racing	46	+ 2 Laps	17	4
18	19	Gastón Mazzacane	Dale Coyne Racing	29	Off course	18	3

Caution flags

Laps	Cause
1-4	Hunter-Reay (4) & Vasser (12) contact
12-13	González (21) off course
16-18	Junqueira (6) off course
31-33	Mazzacane (19) off course
45-46	Allmendinger (10) & Sperafico (14) spin/stall