An essential piece of kit for any hiker, the backpack carries all the gear needed for outdoor outings. Its volume is measured in litres and indicates the capacity to hold hiking equipment. When choosing one, you need to take into account the build and physical condition of the wearer, as well as the type and duration of the outing. Here are some tips for choosing the right hiking backpack size.
Key takeaways:
- The right hiking backpack size can be determined by the duration and type of outing.
- A pack of 10 to 35 litres is recommended for a day hike.
- A pack of 30 to 70 litres is ideal for several days outdoors.
- A pack of over 50 litres is needed for a long-distance hike.
Backpack size for a day hike
If you've acquired hiking backpacks, you may be wondering which pack to choose for a day outing. We recommend choosing a pack with a volume between 10 and 35 litres. The smallest and lightest pack possible is ideal for carrying only the essentials on a short, intense outing.
A slightly larger volume lets you bring your packed lunch, water, sunscreen and small accessories. If you're going as a family, especially with young children, go for a 35-litre pack. You'll be able to carry their things so they don't tire themselves out too much.
Backpack size for multi-day hiking
Choosing the right hiking backpack size gets more complex when you're heading into the mountains for several days. Its volume will depend on your accommodation and resupply conditions. The best hiking backpack is the one that matches your type of outing.
For several days with meals and nights in a mountain hut, you can opt for a pack between 30 and 40 litres. If you're staying in a hut but carrying your own food, you can choose a volume between 50 and 60 litres. Finally, for full autonomy, we suggest a pack of 60 to 70 litres. This allows you to carry your bivvy, cooking and hiking gear.
Backpack size for long-distance hiking or a long trek
If you've decided to take on a long hike or extended trek, the choice — and in particular the size — of your hiking pack should not be taken lightly. A minimum volume of 50 litres is recommended when nights and meals are in a mountain hut. You can add 10 extra litres if meals are not included in your accommodation.
Finally, we recommend choosing a pack of 70 litres or more for a long hike in full autonomy. This lets you carry all your bivvy and cooking gear, as well as enough clothing to cover all weather conditions.
Also think about maintenance and find out how to wash a hiking backpack.
Other factors to consider
Beyond the recommended capacity based on the duration and type of your outings, the size of a hiking backpack will depend on several factors. The first is your build. You'll need to choose the size and shape of your pack based on the length of your back. For women, there are specific packs designed to fit the female frame.
Physical fitness will also play a role in choosing the right hiking backpack size. Bear in mind that once packed, your bag should not exceed 10 to 15% of your body weight. Smaller frames and children should stay at the lower end of that percentage, while athletes with a larger build can load their pack slightly more.
Ultimately, the difficulty of the trails, weather conditions, the number of people sharing the load, or the transport of specific equipment (cameras, children's gear, dog accessories) also factor into the choice of hiking backpack size. Its volume will therefore constantly evolve in line with your own outings.
