How Backpack Weight Powerfully Impacts Calories Burned While Rucking for Faster Fat Loss

Understanding the effects backpack weight in terms of calories burned when rucking is crucial if your goal is fat loss, endurance or sustainable conditioning. At first glance, rucking may appear to be no different from walking. However, the moment you put on some weight in your backpack, your body goes into a very different physiological state.

Adding load raises energy expenditure, increases heart rate response and greatly increases the total calorie expenditure. This is why rucking with a weighted backpack has become a very effective form of joint friendly cardio.

calories burned while rucking

What Is Rucking? Load Carriage Explained

Rucking is an example of weighted walking and it has its roots in military ruck marching. In exercise science this type of activity is under the umbrella of load carriage, which is the movement of the body with an external load.

Unlike normal walking, a rucking has a combination of:

  • Aerobic conditioning
  • Endurance training
  • Metabolic efficiency

This is why rucking exercise calories burned tend to exceed expectations.

Backpack Load and Energy Expenditure

When the weight of backpack is added, the body has to overcome more resistance with every step. This increases:

Together, all these factors explain the huge increase in calories burned rucking, as compared to normal walking.

The Science: Pandolf Equation and Load Carriage Models

Researchers estimate rucking energy demands from the Pandolf Equation, one of the most commonly used load carriage equations developed by the U.S. military.

This model accounts for:

Modern research has found heavier weights help to raise calorie burning at rucking, but only up to a safe point.

How Many Calories Does Rucking Burn?

A common question that is asked is how many calories does rucking burn.

On average:

  • Normal walking: ~250-300 calories/hour
  • Weighted backpack walking calories: 400-600+ calories/hour

This makes rucking vs walking calories an easy comparison – rucking burns significantly more.

So, does rucking burn more calories than walking? Yes, consistently.

Rucking vs Running Calories

When we compare rucking vs running calories, rucking will be the winner, especially with relatively moderate loads. Unlike running, rucking provides low impact calorie-burn.

So, does rucking burn more calories than running? Per mile, and over longer periods of time, often, yes.

Load-to-Bodyweight Ratio: Best Backpack Weight for Rucking

Load to bodyweight ratio is a determining factor for safety and efficiency.

Recommended ranges:

  • Beginner rucking weight: 5-10% of body weight
  • Intermediate: 10-20%
  • Advanced: 20-30%

Exceeding one-third of the body weight increases the risk of injury without significant improvements in the benefits of rucking workouts.

Walking Speed, Terrain, and Calories

There is a strong relationship between walking speed and calories. The faster the pace the more energy is burned, even if you are under load.

Rucking Uphill and Inclines

Rucking uphill and incline walking with weight will greatly increase the metabolic demand.

Rucking on Trails

Rucking on trails creates instability which increases the impact of the terrain on the calorie burn up to 40%.

Rucking for Weight Loss and Zone 2 Cardio

Many ask is rucking good for weight loss. Yes – especially since it promotes Zone 2 cardio that is optimal for fat burning.

The beauty of rucking is that it can be done for long duration without joint degradation and is perfect for long-term fat loss.

Proper Technique and Injury Prevention

Effective rucking requires:

This guarantees long term success without overuse injuries.

Mental Benefits and Green Exercise

Rucking outdoors can be considered as green exercise, which helps to boost mood, stress levels and build mental strength together with physical results.

Frequently Asked Questions (FAQs)

Q1: How many calories does rucking burn compared to walking?

Answer: How many calories does rucking burn will depend upon your backpack weight, your pace, the terrain and your body weight. On average, normal walking will burn about 250-300 calories per hour, whereas calories burned rucking can be from 400 to 600+ calories per hour.

The reason for this difference is that rucking provides external loading that results in increased energy expenditure and oxygen consumption. This means that rucking vs walking calories is a clear win for rucking if you are looking to burn calories.


Q2: Does rucking burn more calories than running?

Answer: Many people ask a question, does rucking burn more calories than running? The answer is dependent on speed, distance and load. Running burns calories at a faster rate per minute, but there is often a tradeoff between rucking vs running calories, in that rucking will burn calories at a higher rate per mile, particularly when a moderate to heavy weight is being carried.

Rucking also has the advantage of being a low-impact form of exercise that provides more sustainable calorie burning for longer durations and for long-term fat loss. For those who have joint problems rucking often gives you more calories burnt in total over a longer period of time.


Q3: Is rucking good for weight loss?

Answer: Yes, is rucking good for weight loss is one of the most searched question and the answer is yes. Rucking for weight loss is a good strategy because it’s the combination of a high calorie burn and joint-friendly cardio.

Rucking naturally keeps most people in Zone 2 cardio which is good for fat oxidation and better metabolic efficiency. Because it is easier to maintain than running, people are more consistent – and consistency leads to fat loss.


Q4: What is the best backpack weight for rucking beginners?

Answer: The optimum weight of a backpack for rucking is dependent upon your body weight and level of experience. For beginners, the experts suggest a beginning rucking weight of 5-10% of the body weight.

This guideline is based on the load/bodyweight ratio applied in load carriage research. Starting light ensures reduced risk of injury and allows the body to adapt by progressive overload.


Q5: Does terrain and incline really affect rucking calorie burn?

Answer: Yes, terrain has a major role in the rucking calorie burn. Rucking uphill or incline walking with weight increases the cost of metabolism because your body has to lift yourself and the weight against the force of the gravity.

Similarly, rucking on trails heightens the impact on calorie burning through reduced walking economy. Uneven surfaces require stabilizing muscles to work harder which results in an increase of total energy use.

Final Takeaway

Understanding the effects of backpack weight on the number of calories burned while rucking will enable you to train smart. By managing your backpack load, rucksack weight, pace, terrain, and your posture, rucking becomes one of the most efficient and accessible conditioning methods available.

Rucking is not about suffering – it is about controlled effort, metabolic efficiency and endurance training done the smart way.

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