1978 - Road Atlanta 100 Miles

4 September 1978 - Road Atlanta Circuit, USA

Peter Gregg wins in a Porsche 935/77A

Overall - 1st, 2nd, 3rd : GTX - 1st, 2nd, 3rd : GTO - 1st, 3rd

No.	Car	#	Class	Drivers	Entrant	Pos	Class	Grid	Notes
59	Porsche 935/77A	930 890 0018	GTX	Peter Gregg (USA)	Brumos Porsche (USA)	1st	1st	3rd	40 laps
93	Porsche 934	930 670 0152	GTX	Don Whittington (USA)	Whittington Brothers Racing (USA)	2nd	2nd	6th	40 laps
94	Porsche 935/77A	930 890 0023	GTX	Bill Whittington (USA)	Whittington Brothers Racing (USA)	3rd	3rd	2nd	40 laps
30	Porsche 935	930 770 0905	GTX	Gianpiero Moretti (I)	Electrodyne Inc. (I)	4th	4th	8th	40 laps
0	Porsche 935/77A	930 890 0021	GTX	Ted Field (USA)	Interscope Racing (USA)	5th	5th	14th	39 laps
55	Porsche 911 Carrera RSR	911 560 9121	GTO	Howard Meister (USA)	Andial Porsche-Meister Homes	8th	1st	20th	38 laps
07	Porsche 911 Carrera RSR	911 560 9114	GTO	Dave Cowart (USA)	Morrison's Inc.	10th	3rd	19th	37 laps
46	Porsche 911 Carrera RSR	911 360 0865	GTO	Mauricio DeNarváez (COL)	Mauricio DeNarvaez (CO)	11th	4th	21st	37 laps
38	Porsche 911 Carrera RSR	911 460 9113	GTO	Bonky Fernandez (PR)	Boricua Racing (PR)	14th	7th	18th	36 laps
51	Porsche 911 S		GTO	Robert Kirby (USA)	John Hotchkis	16th	9th	23rd	35 laps
9	Porsche 935		GTX	R. D. Whittington (USA)	Whittington Brothers Racing (USA)	17th	8th	25th	35 laps
85	Porsche 914/6		GTO	John Hulen (USA)/Ron Coupland (USA)	John Hulen (USA)	20th	10th	26th	34 laps
60	Porsche 911		GTO	Ren Tilton (USA)	R & R Racing	21st	11th	28th	33 laps
28	Porsche 935	930 770 0960	GTX	Clif Kearns (USA)	Desperado Racing (USA)	26th	15th	12th	18 laps - DNF
00	Porsche 935/77A	930 890 0019	GTX	Danny Ongais (USA)	Interscope Racing (USA)	27th	16th	1st	11 laps - DNF