September Subway special: all regular footlongs are $5

From now until the end of September, it's SUB-tember at Subway. All regular footlong subs are $5.

Premium and Supreme subs are not covered by this special. There is an additional charge for extras. The price is higher in Alaska and Hawaii.

Sandwiches featured as part of this promotion are the Black Forest Ham, the BLT, the Buffalo Chicken, the Cold Cut Combo, the Italian B.M.T., the Meatball Marinara, the Oven-Roasted Chicken, the Spicy Italian, the Subway Club, the Subway Melt, the Sweet Onion Chicken Teriyaki, the Tuna, the Turkey Breast, the Turkey Breast and Black Forest Ham, the Veggie Delight, the Bacon, Egg and Cheese, the Black Forest Ham, Egg and Cheese, the Breakfast B.M.T. Melt, the Egg and Cheese, the Steak, Egg and Cheese and the Sunrise Sunday Melt.

B.M.T. stands for "Biggest, Meatiest and Tastiest", and was used as a tie-in to the Brooklyn Manhattan Transit in the early days of the chain of sandwich shops.

At Subway, customers can customize their subs. In fact, there are more than 2 million sandwich varieties available when customization factors in. Condiments and extras include bacon, cheddar cheese, chipotle Southwest dressing, fat-free honey mustard, fat free sweet onion dressing, light mayonnaise, mayonnaise, yellow mustard, deli brown mustard, olive oil blend, pepperjack cheese, pepperoni, processed American cheese, Provolone cheese, ranch, shredded Monterey blend, Swiss cheese and vinegar.

Vegetables include avacado, banana peppers, cucumbers, green peppers, jalapeno peppers, lettuce, olives, onions, pickles, spinach and tomatoes.

Breads are Flatbread, 9-Grain Wheat, Hearty Italian, Honey Oat, Italian White, Italian Herbs and Cheese, Monterey Cheddar, Parmesan Oregano, Roasted Garlic, Sourdough, Mini Italian White and Mini Wheat.

According to Subway, all 6-inch sandwiches made to standard order contain 2 servings of fresh vegetables. The bread is fortified with vitamin D. None of Subway's products contain artificial trans fats, and all contain vitamins A and C, calcium and iron. With the exception of the Veggie Delight, all are good sources of protein and complex carbohydrates.

The 6-inch 9-Grain Wheat and Honey Oat breads increases the fiber content of the sandwich to 20 percent of the recommended daily allowance.

Subway reports that out of all the 6-inch subs, 4 subs are under 300 calories, 7 subs are under 350 calories, 11 subs are under 400 calories (that's more than half of the subs), and 14 subs are under 500 calories (that's more than two-thirds of the subs).