A 6-foot hero sandwich serves 20 to 40 people if they each eat a 1.5- to 3-inch portion. If they each eat 6-inch portions, it can serve 12 people. Purchasing this size of sandwich usually must go through a catering department due to the amount of ingredients needed.
Hero sandwiches are another name for submarine or sub sandwiches. Stores in the northeast, such as Hero Boy in New York and the King Kullen grocery chain, use "hero" instead of "sub." In other parts of the country and at many national shops and groceries, the sandwich is simply called a "sub." Not all sub and hero vendors sell 6-foot-long sandwiches, though many large vendors do.