Quiznos is located at 6600 Sugarloaf Pkwy # 300, Duluth, GA. This business specializes in Restaurants. Quiznos is open Mon, 11am-9pm ; Tue, 11am-9pm ; Wed, 11am-9pm ; Thu, 11am-9pm ; Fri, 11am-9pm ; Sat, 11am-9pm ; Sun, 12am-8pm. and accepts American Express, Discover and Visa.