How Big Should a Backpacking Backpack Be? Your Ultimate Guide to Pack Size
So, you're gearing up for your first (or maybe fifth!) backpacking adventure. The thrill of the open trail, the promise of breathtaking views, and the sweet sound of nature calling – it’s all exciting! But before you can even think about hitting the path, there's a crucial piece of gear to consider: your backpack. And the biggest question on everyone's mind is often, "How big should a backpacking backpack be?"
The answer isn't a one-size-fits-all number. The ideal backpack size for your adventure depends on a few key factors, primarily the duration of your trip and the type of gear you need to carry.
Understanding Backpack Volume: Liters are Key
Backpack capacity is measured in liters (L). This is the standard unit of volume for most outdoor gear. Think of it as the internal space available for your belongings. Generally, backpacking packs range from about 30 liters to 80 liters or more.
Choosing the Right Size Based on Trip Length:
Here's a breakdown of typical backpack sizes and what they're best suited for:
- Day Hikes (10-30 Liters): While not technically "backpacking" in the overnight sense, it's worth mentioning. These are for short excursions where you only need to carry essentials like water, snacks, a light jacket, and a first-aid kit.
- Weekend Trips (30-50 Liters): Perfect for 1-3 night excursions. You'll have enough space for a sleeping bag, a small tent or bivy, a stove, food, and extra clothing layers. This is a popular size for many beginners.
- Multi-Day Trips (50-70 Liters): This is the sweet spot for most backpackers embarking on trips lasting 3-5 nights. You can comfortably fit all your essentials, plus perhaps a few more creature comforts, and a bit more food.
- Extended Trips (70+ Liters): For journeys of a week or longer, or for trips in colder climates where bulkier gear is required, a larger pack is necessary. This size can also be useful for thru-hikers or those carrying gear for others (like children).
The Importance of Gear Volume:
Beyond trip length, the type of gear you bring plays a significant role. Are you a minimalist who packs only the bare necessities, or do you prefer a bit more comfort with a warmer sleeping bag, a thicker sleeping pad, and more culinary options?
- Ultralight Gear: If you're investing in ultralight or minimalist gear (think compact sleeping bags, small tents, and dehydrated meals), you might be able to get away with a smaller pack than someone using more traditional, bulkier equipment.
- Winter Camping: Cold-weather adventures invariably require more bulky gear, such as warmer sleeping bags, extra layers of insulation, and possibly a four-season tent. This will necessitate a larger pack.
- Luxury Camping: If your definition of backpacking includes a camp chair, a Kindle, and a gourmet cooking setup, you’ll likely need a bigger pack.
Factors Beyond Volume:
While liters are the primary measurement, other factors influence your choice:
- Torso Length: This is perhaps the most critical fit consideration after volume. Backpacks come in different torso lengths to accommodate varying body shapes. An ill-fitting pack, regardless of its size, will be uncomfortable.
- Pack Design: Some packs are designed with more external pockets and straps, which can increase their overall carrying capacity and organization, even if the internal liter volume is the same.
- Your Packing Style: Experienced backpackers often develop efficient packing techniques that allow them to fit more into smaller spaces.
When Bigger Isn't Always Better:
It's tempting to grab the biggest pack you can find, thinking it offers more flexibility. However, an oversized pack can be detrimental:
- Encourages Overpacking: A large empty space is an invitation to bring unnecessary items, leading to a heavier and more cumbersome pack.
- Poor Weight Distribution: If a large pack isn't filled properly, the weight can shift and become unbalanced, leading to discomfort and potential injury.
- Increased Weight: Larger packs themselves are often heavier, adding to your overall load before you even start filling them.
Recommendations for Common Scenarios:
Let's get specific:
- Beginner Weekend Hiker: A 40-55 liter pack is an excellent starting point. This size offers enough room for essentials without being overwhelming.
- Experienced Multi-Day Backpacker: A 55-65 liter pack is generally ideal for trips of 3-5 nights.
- Extended Trip or Winter Backpacker: Consider a 65-75 liter pack or larger.
Ultimately, the best way to determine the right size is to:
- Assess your typical trips: How long are they? What season?
- Gather your gear: Lay out everything you'd typically bring.
- Try packs on with weight: Visit an outdoor gear store and have a professional help you fit packs. Load them up with weight to simulate a real hiking scenario.
Don't be afraid to start a bit smaller and learn to pack efficiently. The goal is to find a pack that comfortably carries what you need without being excessively large or heavy. Happy trails!
Frequently Asked Questions (FAQ)
How do I know if a backpack is the right size for my torso?
Backpack sizing is crucial and goes beyond just the liter capacity. Most backpacking packs are adjustable for torso length. You can determine your torso length by measuring from your C7 vertebra (the bony protrusion at the base of your neck) down to the iliac crest (the top of your hip bones). Most outdoor retailers have staff who can help you measure and adjust a pack to your specific torso length, ensuring a proper fit that distributes weight correctly.
Why is it important to not overpack my backpack?
Overpacking leads to a heavier load, which can cause fatigue, muscle strain, and even injuries over extended periods of hiking. A heavier pack is also more difficult to maneuver on uneven terrain, increasing the risk of falls. Furthermore, an overly full backpack can make it harder to access essential items quickly, such as rain gear or snacks.
Can I use a carry-on size suitcase for backpacking?
Generally, no. While some carry-on suitcases might have a similar liter capacity to smaller backpacking packs, they are not designed for the rigors of the trail. Backpacking backpacks are built with durable materials, robust suspension systems to distribute weight, and features like hip belts and sternum straps that are essential for comfort and stability when carrying a load for miles over varied terrain. Suitcases lack these crucial elements.
How much weight should I aim for my fully packed backpack to be?
A common recommendation is to aim for your fully packed backpack to be no more than 20% of your body weight. For example, if you weigh 150 pounds, your backpack should ideally not exceed 30 pounds. This is a guideline, and individual fitness levels and experience will play a role. However, keeping your pack weight manageable is key to enjoying your hike.
What's the difference between a backpacking pack and a hiking daypack?
The primary difference lies in capacity and design. Daypacks are much smaller, typically ranging from 10-30 liters, and are designed for short trips where you only need to carry essentials like water, snacks, and a light layer. Backpacking packs are larger (30-80+ liters) and feature more robust suspension systems, hip belts, and padded shoulder straps to comfortably carry heavier loads for multi-day trips. They also often have more organizational features and attachment points for gear.
