One 100 g serving of formulated bar, mars snackfood us, snickers marathon chewy chocolate peanut bar has 396 calories, 47.2 g of carbs, and 2.5 g of fiber.
Full macro and micronutrient breakdown, plus how this compares across diets, is on the Formulated bar, MARS SNACKFOOD US, SNICKERS MARATHON Chewy Chocolate Peanut Bar nutrition facts page.