I GT klassen var det BMW M3 GT'erne fra Rahal Letterman teamet og Ferrari F430 GT'erne fra Risi Competizione teamet der dominerede. Først på femtepladsen i denne klasse kom den første af Corvetterne. Johnny O'Connell kørte den træning for bil #3 og hans tid kunne ikke matche de andres.

Guy Cosmo som har huseret i Danmark i Formel 20000 blev nummer 9 i GT klassen og nummer 21 generelt.

Tiderne fra 1. fri træning:

Pl.	#	Kl.	Team / Mærke	Kørere	Tid/Diff.	Mph.
1	8	LMP	Drayson Racing	P.Drayson	1:12,049	112,823
			Lola B09/60 Judd	J.Cocker
2	16	LMP	Dyson Racing Team	C.Dyson	1:12,761	111,719
			Lola B09/86 Mazda	G.Smith	+ 00,712
3	37	LMP	Intersport Racing	J.Field	1:13,183	111,075
			Lola B06/10 AER	C.Field	+ 01,134
4	1	LMP	Patron Highcroft Racing	D.Brabham	1:13,211	111,032
			HPD ARX-01c Honda	S.Pagenaud	+ 01,162
5	12	LMP	Autocon Motorsports	B.Willman	1:16,390	106,412
			Lola B06/10-AER	T.Drissi	+ 04,341
6	99	LMPC	Green Earth Team Gunner	G.Jeannette	1:17,190	105,309
			Oreca FLM09	E.Julian	+ 05,141
7	55	LMPC	Level 5 Motorsports	S.Tucker	1:17,551	104,819
			Oreca FLM09	C.Bouchut	+ 05,502
8	52	LMPC	PR1 Mathiasen Motorsports	L.Diaz	1:18,125	104,049
			Oreca FLM09	R.Gonzalez	+ 06,076
9	36	LMPC	Genoa Racing	F.Montecalvo	1:18,575	103,453
			Oreca FLM09	C.Zugel	+ 06,526
10	95	LMPC	Level 5 Motorsports	S.Tucker	1:18,860	103,079
			Oreca FLM09	A.Wallace	+ 06,811
11	89	LMPC	Intersport Racing	B.Wong	1:18,873	103,062
			Oreca FLM09	K.Marcelli	+ 06,824
12	5	LMP	Libra Racing	A.Prendeville	1:19,397	102,382
			Radical SR9 IES	C.Buncombe	+ 07,348
13	92	GT	BMW Rahal Letterman Racing	B.Auberlen	1:20,680	100,754
			BMW E92 M3	T.Milner	+ 08,631
14	62	GT	Risi Competizione	J.Melo	1:20,699	100,730
			Ferrari 430 GT	G.Bruni	+ 08,650
15	61	GT	Risi Competizione	G.Fisichella	1:20,738	100,681
			Ferrari 430 GT	T.Vilander	+ 08,689
16	90	GT	BMW Rahal Letterman Racing	J.Hand	1:20,975	100,387
			BMW E92 M3	D.Mueller	+ 08,926
17	4	GT	Corvette Racing	O.Beretta	1:20,982	100,378
			Chevrolet Corvette ZR1	O.Gavin	+ 08,933
18	45	GT	Flying Lizard Motorsports	J.Bergmeister	1:21,253	100,043
			Porsche 911 GT3 RSR	P.Long	+ 09,204
19	44	GT	Flying Lizard Motorsports	P.Pilet	1:21,258	100,037
			Porsche 911 GT3 RSR	S.Neiman	+ 09,209
20	3	GT	Corvette Racing	J.Magnussen	1:21,289	99,999
			Chevrolet Corvette ZR1	J.O'Connell	+ 09,240
21	02	GT	Extreme Speed Motorsports	E.Brown	1:21,417	99,842
			Ferrari 430 GT	G.Cosmo	+ 09,368
22	01	GT	Extreme Speed Motorsports	S.Sharp	1:21,703	99,492
			Ferrari 430 GT	J.van Overbeek	+ 09,654
23	40	GT	Robertson Racing	D.Robertson	1:22,419	98,628
			Doran Design Ford GT	A.Robertson	+ 10,370
				D.Murry
24	17	GT	Team Falken Tire	B.Sellers	1:22,865	98,097
			Porsche 911 GT3 RSR	W.Henzler	+ 10,816
25	75	GT	JaguarRSR	P.Gentilozzi	1:24,982	95,653
			Jaguar XKRS	M.Goossens	+ 12,933
26	54	GTC	Black Swan Racing	T.Pappas	1:25,340	95,252
			Porsche 911 GT3 Cup	J.Bleekemolen	+ 13,291
27	48	GTC	Orbit Racing	B.Miller	1:25,413	95,171
			Porsche 911 GT3 Cup	L.Hines	+ 13,364
28	69	GTC	WERKS II Racing	R.Rodriguez	1:25,584	94,980
			Porsche 911 GT3 Cup	G.Bieker	+ 13,535
29	63	GTC	TRG	H.Richard	1:25,829	94,709
			Porsche 911 GT3 Cup	S.Pumpbelly	+13,780
30	88	GTC	Velox Motorsports	S.Lewis	1:25,881	94,652
			Porsche 911 GT3 Cup	J.Vento	+ 13,832
31	32	GTC	GMG Racing	B.Curtis	1:27,478	92,924
			Porsche 911 GT3 Cup	J.Sofronas	+ 15,429
32	23	GTC	Alex Job Racing	B.Sweedler	1:27,515	92,885
			Porsche 911 GT3 Cup	R.Kapudija	+ 15,466
33	28	GTC	911 Design	L.Beggs	1:28,229	92,133
			Porsche 911 GT3 Cup	D.Baron	+ 16,180
34	6	LMP	Team CytoSport	G.Pickett	DNS
			Porsche RS Spyder	K.Graf

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