July 29, 1956		Marlboro Motor Raceway, Upper Marlboro, MD	URC Sprint Car	Eddie Gallione
June 30, 1957		Marlboro Motor Raceway, Upper Marlboro, MD	ARDC Midget	Jiggs Peters
September 21, 1958	Marlboro Grand Prix	Marlboro Motor Raceway, Upper Marlboro, MD	USAC Road Racing Championship	George Constantine
April 5, 1959		Marlboro Motor Raceway, Upper Marlboro, MD	NASCAR Convertible	Rex White
September 14, 1960		Marlboro Motor Raceway, Upper Marlboro, MD	ARDC Midget	Len Duncan
May 31, 1965		Marlboro Motor Raceway, Upper Marlboro, MD	ARCA Stock Car	Jack Bowsher
August 14, 1966	The Great Race	Marlboro Motor Raceway, Upper Marlboro, MD	SCCA Trans Am	Bob Tullius Tony Adamowicz
August 12, 1967	Double 300	Marlboro Motor Raceway, Upper Marlboro, MD	SCCA Trans Am	Bert Everett Jerry Titus
August 13, 1967	Double 300	Marlboro Motor Raceway, Upper Marlboro, MD	SCCA Trans Am	Mark Donohue Craig Fisher