Marathon Gas is a car wash and auto repair shop in Westminster, Maryland, at 451 Baltimore Blvd, Westminster. Opening hours: Mon–Fri 5 AM–10 PM · Sat–Sun 6 AM–9 PM. Listed services: Gas station, Convenience store, Fast food restaurant, Oil change service, Wheelchair accessible entrance and Diesel gas and Restroom and Debit cards. Call (410) 848-3490 to check prices or availability before you go.