A rucksack isn't only there to carry your kit. With rucking, an ordinary walk becomes a deliberate training stimulus. This guide gives you a practical, research-led approach, along with concrete advice on choosing your gear, getting your technique right, and one product worth knowing about if you want to start straight away.
What is rucking?
Rucking means walking with added weight in your rucksack. Compared with walking unloaded, it pushes up your heart rate, oxygen uptake and perceived effort. In a controlled study using a weighted rucksack carrying around 20 per cent of bodyweight, VO2, minute ventilation and RPE all rose in both load positions. The extra metabolic cost therefore comes mainly from the weight itself, rather than where you position it in the pack. See Golriz et al.
Why ruck instead of run?
Rucking delivers a solid cardiometabolic stimulus with far less impact than running. It pairs well with strength training and drives both work capacity and fat burning. The same study shows you expend more energy than walking unloaded, while the movement itself stays kind to your joints. Research
Safety and stability under load
Walking under load demands more balance and neuromuscular control. A laboratory study using 20 kg found that the local dynamic stability of the gait pattern was significantly lower with a rucksack than without, measured via the maximum Lyapunov exponent. Notably, at a given weight the frame type of the pack made little difference to that stability. See Moon et al. and the open PDF via Semantic Scholar.
- Wear shoes with decent grip and strap the load down firmly
- Keep the weight close to your torso and minimise bounce
- Shorten your stride slightly and pick up your cadence
- Use walking poles on uneven ground for extra stability
Performance after marching isn't purely weight-driven
A field study following soldiers through two 11.8 km marches and live-fire shooting found the effect on task performance isn't linear. Moderate exertion can actually improve performance, but at the higher heart rates that follow a march, hit probability drops. Distance and duration turn out to be decisive, not just the added weight. See Tenan et al. and the summary on Europe PMC.
Choosing a rucksack for rucking
For rucking you want a rucksack that sits tight against your back and keeps the weight close to your centre of gravity. Look for thick shoulder straps, a chest strap and a hip belt. An internal sleeve or plate pocket helps you pack the load compactly. For short, intense sessions a weighted vest is handy. A hybrid solution covers both: a compact pack that works as a weighted rucksack and as a vest, such as the Centr rucksack. That lets you switch quickly between the commute, a ruck and a tempo interval without the load shifting about.
Where should the weight sit when you ruck?
In practice, high and close to the spine tends to be the most stable, particularly at pace. That said, participants in Golriz's research reported less shoulder strain with a lower position, while the metabolic cost stayed comparable at around 20 per cent of bodyweight. So pick whichever position keeps you stable and comfortable. Source.
How to start rucking
- Groundwork two to three unloaded walks a week of 30 to 45 minutes, focusing on posture
- Starting weight 5 to 10 per cent of bodyweight for 30 to 45 minutes on flat ground
- Progression increase duration or distance first and only then weight, by roughly 10 to 15 per cent a week
- Technique neutral torso, short stride, shoulders down, rhythmic cadence
Pair this with two strength sessions a week. Pilates reformers can add mobility and core control. Wrist weights are less suitable here because of the localised joint stress. You won't normally need a lifting belt or braces for rucking – focus on active core tension instead.
FAQ
What does 'ruck' actually mean?
Ruck refers to loaded marching and training under load. It's purposeful walking with added weight to build fitness and carrying capacity.
Is rucking good for you?
Yes, provided you build up progressively. Under load, VO2, ventilation and perceived exertion all increase, which raises the calorie cost. Bear in mind the reduced dynamic stability compared with unloaded walking, and choose safe ground. See Golriz and Moon.
Is rucking just walking with a rucksack?
Technically yes, but the training intent is deliberate. You're dosing weight, distance and intensity, and strapping the load down so the stimulus stays consistent. That's what separates it from a casual walk.
Which rucksack should you use for rucking?
A 20 to 30 litre rucksack with a chest strap, hip belt and internal sleeve works for most beginners. For short sessions or stair work, a compact system like the Centr rucksack is useful because it keeps the weight sitting high and tight.
Is rucking suitable for older adults?
Potentially, but start very light and very short, and work under supervision. Stability drops under load, especially on uneven ground. See the stability findings from Moon et al.
Which muscles does rucking work?
Primarily the quadriceps, hamstrings, calves and glutes, with the core and postural muscles working secondarily. It's endurance work above all. For hypertrophy, add targeted strength training. A weighted vest can intensify short, hard blocks.
Can rucking build muscle, and will it bulk up your legs?
Rucking mainly develops aerobic capacity and muscular endurance. Muscle mass grows chiefly through progressive strength training. What rucking can do is improve your recovery and work capacity, which indirectly supports your strength progression.
How should a beginner start, and how far should you ruck?
Start with 2 to 4 km on flat ground carrying 5 to 10 per cent of bodyweight. Build towards 5 to 8 km over six to eight weeks. Only add weight once you can finish the same route comfortably.
How much weight should you ruck with?
Beginners 5 to 10 per cent of bodyweight, intermediates 10 to 15 per cent, advanced 15 to 20 per cent – as long as technique, pace and RPE stay under control. Where precision tasks follow the effort, managing heart rate and distance covered is critical. See Tenan et al.
Is rucking better than walking on an incline?
Both raise the demand. Rucking is more specific to carrying capacity and load management, while incline walking increases the cardio demand without the loss of stability that weight brings. Alternating between them gives you the broadest stimulus.
How many calories does rucking burn, and when will you see results?
The burn is clearly higher than unloaded walking because of the rise in VO2 and ventilation. You'll often feel the fitness improvement within two to three weeks; body composition shifts more slowly. See Golriz et al.
Programme and practical checklist
- Weeks 1 and 2 two sessions of 30 to 40 minutes at 5 to 10 per cent of bodyweight on flat ground
- Weeks 3 and 4 two to three sessions of 40 to 50 minutes at 8 to 12 per cent of bodyweight, plus one hill or stair day
- Weeks 5 and 6 two sessions of 50 to 60 minutes at 10 to 15 per cent of bodyweight, plus one short tempo ruck
- Weeks 7 and 8 one long ruck of 70 to 90 minutes at 12 to 18 per cent of bodyweight, one tempo ruck and one strength session
- Wear socks and shoes that won't give you blisters, and secure the weight inside the pack
- Consider walking poles on trails, and a compact hybrid pack for tempo work such as the Centr rucksack
- Avoid loose wrist weights when rucking, and keep your core actively engaged rather than relying on a lifting belt
Why this approach works
Put the evidence on stability, metabolic response and post-exertion performance together and rucking emerges as a smart form of training you can dose precisely. Stability falls under load, so you invest in technique and choose your ground carefully. Energy expenditure rises, so you use rucking for conditioning and fat loss. And you plan distance and intensity deliberately when precision is needed afterwards. See Moon, Golriz and Tenan for the underlying data.
