Formulated bar, MARS SNACKFOOD US, SNICKERS MARATHON Double Chocolate Nut Bar
Whole food · Snacks
Photo: Wikipedia
A dense, chewy performance bar packed with crunchy peanuts and a thick layer of chocolate. It delivers a potent hit of protein (22g per 100g) and carbohydrates, making it a serious fuel source for endurance activities. The texture is a satisfying mix of nougat, caramel, and nuts, all coated in smooth milk chocolate.
Calorie split: 24% protein · 55% carbs · 21% fat
↓ Full nutrition💚 Why it's loved
People love it as a nostalgic, indulgent-tasting treat that also serves a practical purpose as serious workout fuel. Its combination of sweet, salty, and nutty flavors in a portable format makes it a go-to for both athletes and snackers.
⚠️ Watch-outs & how to enjoy it better
The high sugar content (22.67g per 100g) can cause a rapid blood-sugar spike, especially if consumed alone. It is also a common allergen (peanuts, milk, soy) and is calorie-dense, so portion control is key for sedentary individuals. To mitigate, pair it with a source of healthy fat or fiber (like an apple) and consume it before or after physical activity.
Key benefits
- High protein content supports muscle maintenance and satiety
- Significant carbohydrate load provides quick and sustained energy for workouts
- Good source of dietary fiber (10.5g per 100g)
- Convenient, portable calorie-dense fuel for hiking or long commutes
- Contains peanuts, a source of monounsaturated fats and micronutrients
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
The 'Marathon' name was used in the UK and other markets for what is known as the 'Snickers' bar in the US, highlighting its original positioning as a substantial, energy-providing snack.
Full nutrition (USDA data · scales with serving)
| Water | 14.0 g |
| Energy | 377 kcal |
| Energy | 1577 kj |
| Protein | 22.4 g |
| Total lipid (fat) | 9.0 g |
| Ash | 3.0 g |
| Carbohydrate, by difference | 51.7 g |
| Fiber, total dietary | 10.5 g |
| Total Sugars | 22.7 g |
| Calcium, Ca | 1495 mg |
| Iron, Fe | 17.9 mg |
| Magnesium, Mg | 317 mg |
| Phosphorus, P | 566 mg |
| Sodium, Na | 333 mg |
| Zinc, Zn | 13.6 mg |
| Vitamin C, total ascorbic acid | 176 mg |
| Niacin | 45.2 mg |
| Pantothenic acid | 22.6 mg |
| Vitamin B-6 | 4.5 mg |
| Folate, total | 905 ug |
| Folic acid | 905 ug |
| Folate, food | 0.00 ug |
| Folate, DFE | 1538 ug |
| Vitamin B-12 | 7.5 ug |
| Vitamin A, IU | 4445 iu |
| Vitamin E (alpha-tocopherol) | 30.5 mg |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 4.8 g |
| Fatty acids, total trans | 0.10 g |
| Cholesterol | 4.0 mg |
Amino acid profile (per 100g)
Estimated from Formulated bar, MARS SNACKFOOD US, SNICKERS MARATHON Energy Bar, all flavors — USDA does not publish this profile for Formulated bar.
| Tryptophan | 0.22 g |
| Threonine | 0.68 g |
| Isoleucine | 0.83 g |
| Leucine | 1.4 g |
| Lysine | 0.97 g |
| Methionine | 0.27 g |
| Cystine | 0.24 g |
| Phenylalanine | 0.98 g |
| Tyrosine | 0.74 g |
| Valine | 0.90 g |
| Arginine | 1.7 g |
| Histidine | 0.48 g |
| Alanine | 0.76 g |
| Aspartic acid | 2.2 g |
| Glutamic acid | 3.8 g |
| Glycine | 0.88 g |
| Proline | 1.1 g |
| Serine | 0.97 g |
| Hydroxyproline | 0.00 g |
FAQ
Is this a good snack for weight loss?
It's calorie-dense (377 kcal per 100g) and high in sugar, making it a poor choice for passive snacking. However, its high protein and fiber can promote fullness, so a half-bar could be a strategic, portion-controlled treat within a calorie deficit, ideally paired with activity.
How does it compare to a regular Snickers bar?
The Marathon version is specifically formulated for performance, with significantly more protein and fiber and often less sugar than a standard Snickers, which is more of a confectionery treat.
Can I eat this as a meal replacement?
While calorie-sufficient, it lacks the micronutrient diversity, hydration, and balanced macronutrient profile of a whole-food meal. It's best used as a supplement or snack, not a regular meal replacement.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 3.77 kcal/g · 24% calories from protein · 10.5 g fiber · 22.7 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.