Rucking: Walking With Weight, and Why It Burns 2–3× More
The most effective training most people are not doing: put weight in a backpack and walk. Here is what the research shows and how to start without hurting yourself.
By Taha Raza
Published
Rucking came out of military training and has become one of the fastest-growing things in fitness, for a simple reason: it takes the one form of exercise almost everybody can already do and makes it far more productive, without adding impact, cost or complexity.
What the numbers actually say
| Measure | Finding |
|---|---|
| Calorie burn | 2–3× normal walking at the same pace |
| A 68 kg person carrying 9 kg | Roughly 400–500 calories per hour |
| Oxygen cost (2024 study) | 30–100% above unweighted walking, depending on load and pace |
| Impact on joints | Far lower than running |
| Equipment needed | A backpack and something heavy |
That middle row is the one worth sitting with. Adding a modest load to a walk you were going to do anyway can nearly double what it costs you, without going faster and without running.
Why it works so well
- It loads the body without impact. Your knees and ankles take far less punishment than running, which makes it viable for heavier people and older trainees who cannot run comfortably.
- It trains posture. Carrying weight on your back forces the upper back, core and glutes to work continuously for the length of the walk.
- It is easy to sustain. You can hold a conversation while rucking, which means you will actually keep doing it — the single biggest predictor of whether any exercise works.
- It stacks onto life. The commute, the school run, walking the dog: any of them can carry a load.
What about bone density?
This is where you should be slightly more careful than most articles are. A five-year study in post-menopausal women found that weighted-vest walking maintained hip bone density while a comparison group lost bone, which is a genuinely encouraging result.
However, a larger twelve-month randomised trial found that adding a weighted vest during weight loss did not clearly beat weight loss alone for most bone outcomes. So treat improved bone density as plausible rather than proven. The calorie burn and the strength benefits are on far firmer ground.
How much weight to start with
Almost every rucking injury comes from the same mistake: starting too heavy. Your heart and lungs adapt within a couple of weeks. Your tendons, ligaments and feet take considerably longer, and they are what break down.
| Stage | Load | Distance |
|---|---|---|
| Weeks 1–2 | 5–10% of bodyweight | 2–3 km |
| Weeks 3–6 | 10% of bodyweight | 3–5 km |
| Months 2–3 | 10–15% of bodyweight | 5–8 km |
| Experienced | 15–20% of bodyweight | 8 km+ |
What to carry it in
A backpack is better than a vest for most people, because it distributes the load more evenly and sits closer to your centre of gravity. You do not need to buy anything specialised to begin.
- Any sturdy backpack with a chest strap and padded shoulder straps.
- For weight: bottles of water, bags of rice or daal, books, or a couple of dumbbells wrapped in a towel.
- Pack the weight high and close to your back, not sagging at the bottom, or it will drag your shoulders backwards.
- Wear shoes with decent cushioning. Your feet take the whole load, every step.
How to programme it
| Goal | How to use it |
|---|---|
| Fat loss | 3–4 rucks a week, 40–60 min, alongside 2 strength sessions |
| General fitness | 2–3 rucks a week, 30–45 min |
| Already lifting | Use rucks on rest days instead of extra gym sessions |
| Complete beginner | Start with unweighted walks, add load in week 3 |
Rucking is not a replacement for strength training. It does not load your muscles hard enough to build much, and it will not do what a squat does. It is the best available way to make your cardio productive rather than merely time-consuming.
Mistakes to avoid
- Starting at 20 kg because it felt fine for the first ten minutes. It will not feel fine on day four.
- Letting your posture collapse. If you are leaning forward from the waist, the load is too heavy or badly packed.
- Rucking every day at first. Three times a week is plenty while your tendons adapt.
- Cheap bags with thin straps that cut into your shoulders and make you carry the load unevenly.
- Treating it as a replacement for lifting rather than an addition to it.
Who should be cautious
If you have back problems, knee injuries, or are significantly overweight, start unweighted and add load slowly, or get someone to check how you are carrying it. Extra weight amplifies whatever your posture is already doing, good or bad.
This article is general information, not medical advice. If you have a back or joint condition, a heart condition, or are pregnant, speak to your doctor before adding weighted walking.
Frequently Asked Questions
What is rucking?
Rucking is walking while carrying weight, usually in a backpack. It comes from military training, where soldiers march with loaded packs, and it has become popular as a low-impact way to make ordinary walking far more physically demanding without running.
How much weight should I start rucking with?
Five to ten percent of your bodyweight for the first two weeks, which is roughly 4 to 8 kg for an 80 kg person. Most injuries come from starting too heavy, because your heart and lungs adapt faster than your tendons and feet. Work up towards 10 to 20 percent over a few months.
How many calories does rucking burn?
Roughly two to three times normal walking at the same pace. A 68 kg person carrying 9 kg burns somewhere around 400 to 500 calories an hour, and studies measuring oxygen cost put weighted walking 30 to 100 percent above unweighted, depending on how much load you carry and how fast you move.
Is rucking better than running?
It is different, not better. Rucking places far less impact stress on the joints, which makes it accessible to people who cannot run comfortably, and it loads the upper back and core in a way running does not. Running raises cardiovascular fitness faster. The best one is whichever you will do consistently.
Can I ruck every day?
Not at first. Two to three times a week is sensible while your tendons, ligaments and feet adapt to carrying load. Once you are established, more frequent light rucking is fine, but increase either the weight or the distance in a given week, never both.
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