How Long Does It Take to Lose 40 Pounds on a Treadmill?

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There are no magic recipes for losing weight. Therefore, exercise is the best option. You might want to know long does it take to lose 40 pounds by running on a treadmill? According to the CDC (source), you can lose 1 to 2 pounds per week. So if you want to lose 40 pounds on a treadmill, it will take you about 20 weeks. That is for about 5 months.

On the other hand, you can speed up this process if you pay more attention to your workout plan and diet ( while you train.

For example, if you don’t eat between meals and only eat three meals per day with a total caloric value of 2,000 (2000 calorie diet) for women and 2,500 (2500 calorie diet)for men, you will lose this amount of weight more quickly.

How to Lose Pounds on Treadmill Effectively?

According to the CDC, a healthy way is to lose no more than 2 pounds per week. In this way, in 20 weeks – which would be the equivalent of approximately five months – 40 pounds can be lost.

On the other hand, in case you are considerably overweight at the beginning of your training, then the weight loss in this first period will be faster. Here is an article that explains why it is much easier to lose weight at the beginning.

If you control what you consume, you can lose 8-10 pounds in 3 weeks with moderate exercise.

You must bear in mind that to lose 1 pound, you must burn 3,500 calories. That is because 3,500 calories equal about 1 pound (0.45 kilogram) of fat (source).

You will be able to do it thanks to the treadmill since you will begin to burn calories, and in contrast, you will reduce the calories consumed.

The secret is not to lose the mobility of the body since when your body is in motion, that improves your metabolism.

How Many Pounds Can I Lose on a Treadmill?

Whether you run or walk on a treadmill, you will get good results if you want to lose weight, even if you are overweight. This is because the effort made to move – whatever the speed and time – will be more incredible and, therefore, more significant energy expenditure.

Read Also: Can I Just Treadmill Walk to Lose Weight? –

So to make you understand, I will give you an example where two people vary in their weight:

If a person weighs 120 pounds and walks at a speed of 3 mph for half an hour, he will burn 160 calories, but if a person with 180 pounds walks for half an hour at the same speed, he will burn 270 calories.

The caloric difference between the two people for just half an hour is 80 calories, so imagine if they both ran.

Also, reducing the number of calories in meals helps a lot, so you will get results in the short term if you also include the treadmill as training.

So if you are overweight, don’t think that just because you can’t run, you won’t get results. Only by walking can you begin to lose weight, and over time, you can run at the most comfortable speed for you.

Also, keep in mind that running quality is important than the number of kilometers.

The treadmill allows you to focus on running technique and precision. Speed, incline, heart rate, intensity… All factors are controllable.

Therefore, when you run on a treadmill, you should look for the quality of the training and not obsess over the distance traveled.

Final Words

As you can see, in 20 weeks, you are more likely to reduce 40 pounds on a treadmill. But for sure, you can lose even more weight if your starting weight is high but take it easy. Change your diet, and instead of worrying about how fast you can lose weight, worry about constant weight loss.


1. How long does it take to lose 1 pound on a treadmill?

To burn 150 calories on the treadmill, you will need to run for 10 minutes. And to lose 1 pound, and you will need to burn 3,500 calories (source). Do not forget that you will lose more calories at the beginning of the training if your weight is high, even if you run at the same speed and time as a person who weighs less.

This is also applicable if you walk fast but at intervals. In addition to burning more calories, you will be able to minimize the impact on your knees and ankles.

Aim for high-intensity interval running combined with low-intensity continuous running. With this type of training, you will be able to strengthen the core and fight abdominal fat.

2. Is it possible to lose 40 pounds in 3 months?

According to You can safely lose 24 pounds in 3 months, and maybe as much as 30 pounds. To lose 40 pounds in 3 months, you’d have to lose more than 3 pounds a week, which is probably too aggressive.

Many people get stuck after a certain time of losing weight. This happens because the basal metabolism slows down.

They say that losing weight too fast can be detrimental to our overall health and damages muscle mass.

Our body needs a certain amount of calories to perform basic functions, such as digestion, respiration, and cell repair. Therefore, losing a lot of weight in a short time is not healthy.

3. Is it possible to lose 40 pounds in 2 months?

Losing 40 pounds in 3 months is aggressive. How about losing 40 pounds in 2 months? That sounds crazy. But losing 40 pounds in 2 months is possible as long as dietary changes are implemented and exercise is constant.

What is also important to consider is what your plan for overall health will be after 2 months.

It is also important that you keep in mind that you consider maintaining a healthy lifestyle when you reach your goal. That is, you can make training and healthy eating a habit.

Following an exercise routine, you can help improve your metabolism rate, although it also depends on your genetics.

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