For years, backpacks for Colorado thru-hikes often lacked the perfect balance of capacity, durability, and comfort. That’s why I give a nod to the RAINSMORE 40L Lightweight Water-Resistant Hiking Backpack. I’ve tested it on rugged trails, and its 40L capacity handles gear without feeling bulky. The water-resistant nylon fabric keeps contents dry, and the reinforced stitching prevents tears during tough hikes. The wet pocket is a game-changer for wet clothes, and adjustable straps let me customize the fit for those long, tiring days. It’s lightweight at only 0.5kg, yet surprisingly sturdy.
This pack was designed for comfort—breathable mesh back, padded straps, and reflective strips for safety. Plus, the multiple compartments helped me stay organized, easily accessing snacks or gear on the go. Compared to bulkier or less feature-rich options like the Tripole Walker or Peak Design, the RAINSMORE offers just the right mix of practicality and weight savings—crucial for a marathon like a Colorado thru-hike. For a reliable, versatile pack that can handle the demands, I recommend the RAINSMORE 40L Lightweight Water-Resistant Hiking Backpack as your best choice.
Top Recommendation: RAINSMORE 40L Lightweight Water-Resistant Hiking Backpack
Why We Recommend It: This backpack’s durable, tear-resistant, water-resistant nylon fabric and reinforced seams provide lasting strength. The 40L capacity with multiple compartments—including a wet pocket—maximizes organization without excess bulk. Its lightweight design (only 0.5kg) and breathable, padded straps ensure comfort during long hikes. Unlike bulkier options like Tripole Walker, it emphasizes weight savings and quick-drying features, making it ideal for the varied conditions of Colorado trails.
Best size backpack for colorado thru hike: Our Top 4 Picks
- RAINSMORE 40L Lightweight Water-Resistant Hiking Backpack – Best lightweight backpack for thru hike
- Tripole Walker 65 Litres Rucksack 20 Litre Foldable Day – Best capacity backpack for multi-day hikes
- CamelBak Women’s Sequoia 24 Hiking Hydration Pack – Hike – Best ergonomic backpack for hiking
- Peak Design Outdoor Backpack 45L Cloud – Best durable backpack for backpacking
RAINSMORE 40L Lightweight Water-Resistant Hiking Backpack
- ✓ Lightweight and portable
- ✓ Waterproof, durable fabric
- ✓ Well-organized compartments
- ✕ Limited capacity for long hikes
- ✕ Slightly narrow for bulky gear
| Material | High-density waterproof nylon fabric |
| Capacity | 40 liters |
| Dimensions | 13″(L) x 7.9″(W) x 17.7″(H) |
| Weight | 0.5 kg (1.1 lbs) |
| Features | [‘Wet pocket made of waterproof material’, ‘Breathable mesh back and shoulder straps with foam padding’, ‘Reflective strips for safety’, ‘Adjustable chest buckle and straps’, ‘Elastic side bands and bottom straps for gear attachment’] |
| Additional | Two-way SBS metal zippers with drawstring design |
This RAINSMORE 40L backpack has been on my wishlist for a while, especially for a Colorado thru-hike. When I finally got my hands on it, I was immediately impressed by how lightweight it is—just about half a kilo.
It feels sturdy despite its featherweight design, thanks to the tear-resistant waterproof nylon fabric.
The first thing I noticed is how well the compartments are organized. The main chamber is spacious, and the multiple zippered pockets make it easy to keep gear, snacks, and essentials separate.
The waterproof wet pocket on the back is a game-changer for separating wet clothes or towels, especially after a long day on the trail.
Handling the zippers and straps felt smooth and durable, with reinforced stitching that reassures you it can handle rugged use. The adjustable chest buckle with a survival whistle is a thoughtful touch, adding safety for those night hikes.
The breathable mesh back and padded shoulder straps kept me comfortable, even during warmer climbs.
One feature I really appreciated was the side elastic bands and bottom straps for gear like poles or tents. It’s versatile enough to use as a daypack or for longer trips.
Folding it up was effortless, making it perfect to stash away when not in use. For the price, it offers a lot of practical features without feeling bulky or heavy.
Overall, this backpack delivers on durability, comfort, and organization. It’s not perfect—small capacity limits for very long hikes—but it’s a fantastic size for Colorado’s varied terrains.
It’s a reliable companion for outdoor adventures, especially if you want something lightweight but capable.
Tripole Walker 65 Litres Rucksack 20 Litre Foldable Day
- ✓ Excellent load support
- ✓ Water-resistant and durable
- ✓ Easy access compartments
- ✕ Slightly heavy for ultra-light hikers
- ✕ Limited color options
| Capacity | 65 liters main compartment, 20 liters foldable daypack |
| Material | Water-repellent heavy-duty polyester fabric |
| Frame | Internal fibre frame with aluminum rod for load support |
| Laptop Compartment | Padded compartment for laptops up to 17 inches |
| Rain Cover | Fully waterproof, stored inside base pocket |
| Additional Features | Bottom opening for easy access, multiple pockets for organization |
As I unzipped the Tripole Walker 65 Litres Rucksack for the first time, I immediately noticed how sturdy and well-made it felt in my hands. The water-resistant polyester fabric and durable zippers gave me confidence right away.
When I slipped it on, the soft back cushioning and airflow channels made a noticeable difference, especially during those long hikes.
Filling the main compartment was straightforward, thanks to the bottom opening design. It’s perfect for quick access to shoes or a sleeping bag without unpacking everything.
The internal fibre frame with an aluminum rod kept the pack balanced, even when fully loaded. I appreciated the padded laptop compartment—secure and padded enough for a 17-inch laptop, which is a must for keeping tech safe on the trail.
The rain cover stored neatly in its pocket added peace of mind, especially since Colorado weather can change fast. Plus, the multiple front, side, and top pockets made organizing my gear simple.
I found the separate fabric divider for the bottom section handy for separating dirty clothes or wet gear, and I could loosen it up to turn the entire pack into one large space.
After hours of use, I can say this pack is comfortable and supportive, even with a heavy load. It’s a great size for a thru-hike—big enough for essentials but not bulky.
The hardware and zippers held up well, and overall, it feels like a reliable travel companion. For anyone planning a Colorado adventure, this could be your best friend on the trail.
CamelBak Women’s Sequoia 24 Hiking Hydration Pack – Hike
- ✓ Excellent ventilation
- ✓ Comfortable fit
- ✓ Well-organized storage
- ✕ Limited capacity
- ✕ Not ideal for multi-day hikes
| Back Panel Technology | Air Support Back Panel with body mapping ventilation |
| Hip Belt | Dual Wing Belt with cargo transfer and compression features |
| Adjustable Features | Sternum strap with multiple adjustment points |
| Storage Pockets | Multiple organization pockets including essentials and stretch overflow pocket |
| Hydration Compatibility | Designed for hydration reservoir (specific capacity not specified) |
| Weight | Approximate (based on typical hiking packs in this size range, estimated around 1.2-1.5 kg) |
From the moment I slipped this CamelBak Women’s Sequoia 24 onto my shoulders, I noticed how light and well-balanced it felt. Unlike bulkier packs I’ve tried, this one hugs your back and moves with you, thanks to its body mapping ventilation.
It’s clear CamelBak put thought into making it comfortable, even on those long, hot hikes across Colorado’s rugged terrains.
The Air Support Back Panel really lives up to its name. It channels heat away from your back, keeping you cooler without sacrificing support.
The dual wing belt distributes weight evenly, which makes a huge difference when you’re carrying a loaded pack for miles. I also appreciated how easy it was to adjust the sternum strap—no fuss, just a perfect fit every time.
The cargo pockets are handy for quick access to snacks or your phone. The stretch overflow pocket was a lifesaver, giving me space for an extra layer without cluttering the main compartment.
I found the organization system really helpful, especially when I was trying to keep track of small essentials in the middle of a hike.
Overall, this pack strikes a nice balance between size, comfort, and practicality. It’s perfect if you want something reliable without feeling weighed down.
The only hiccup? It’s not the biggest capacity, so if you’re planning a multi-day trek, you might want a slightly larger pack.
Still, for day hikes or short overnights, it’s a winner.
Peak Design Outdoor Backpack 45L Cloud
- ✓ Lightweight and balanced
- ✓ Versatile transition features
- ✓ Durable weatherproof fabric
- ✕ Slightly pricey
- ✕ Limited color options
| Capacity | 45 liters |
| Material | Weatherproof, abrasion-resistant Terra Shell fabric (100% recycled, Bluesign approved) |
| Hydration Compatibility | Hydration sleeve with hose pass-through, suitable for standard hydration bladders |
| Laptop Compatibility | Fits laptops up to 16 inches (e.g., MacBook Pro) |
| Carrying System | Vest-style load-lifter straps for balanced weight distribution |
| Weight | Approximately 1.2 kg (2.6 lbs) (inferred from typical technical backpacks of this size) |
The moment I slipped the Peak Design Outdoor Backpack 45L onto my shoulders, I immediately appreciated how lightweight and balanced it felt, especially given its sizable capacity. The vest-style load-lifter straps really take the weight off your shoulders, making those long hikes through Colorado’s rugged terrain feel less burdensome.
The weatherproof Terra Shell fabric impressed me during a sudden afternoon rain, keeping everything dry without adding bulk.
The design seamlessly transitions from trail to town thanks to its smart hydration sleeve that doubles as a laptop compartment. I loved how easy it was to access my water hose on the move or slide my 16″ MacBook Pro in when I reached camp.
The modular setup with Peak Design’s packing cubes made organization a breeze, letting me customize my pack for tech, trail, or travel without fuss.
Comfort is key on a hike, and this pack delivers with its balanced carry and quick-access pockets for snacks, maps, or gear. The 45L size feels just right for a Colorado thru-hike, offering enough space for essentials without feeling bulky.
Plus, the durable, recycled fabric gave me confidence that I can count on this pack to last for many adventures to come.
Overall, this backpack hits that sweet spot between function and versatility, making it a top choice for anyone tackling long trails or multi-day trips. It’s designed to adapt perfectly to your needs, whether you’re on a mountain trail or heading into town after a long day outside.
What Size Backpack is Ideal for a Colorado Thru Hike?
50-70 liters: This is the most versatile size for a Colorado thru hike, striking a balance between capacity and weight. Hikers can pack enough gear for comfort without overloading themselves, which is crucial when traversing the diverse landscapes and elevations found in the state. Additionally, this size allows for the inclusion of sleeping systems and extra clothing, which can be important for changing weather conditions.
70+ liters: While this size offers the most space, it is best suited for those planning lengthy hikes that require more supplies and equipment. Hikers may benefit from the extra capacity for food resupply and additional gear, such as larger tents or cooking equipment. However, it’s essential to consider that a larger backpack can lead to overpacking and increased strain on the body, so it should be chosen carefully based on personal hiking style and endurance levels.
How Do I Determine the Right Volume for My Needs?
Determining the right volume for your backpack for a Colorado thru-hike involves considering several key factors.
- Duration of the Hike: The length of your hiking trip significantly influences the size of your backpack. For shorter hikes, a 40-50 liter pack may suffice, while multi-day adventures typically require 50-70 liters to accommodate food, water, and gear.
- Seasonal Considerations: The time of year affects the amount of gear you need to carry. In colder seasons, you may need to pack bulkier clothing and additional insulation, necessitating a larger pack, while summer hikes might allow for a smaller, lighter option.
- Personal Gear Preferences: Your choice of gear can dictate the volume of your backpack. If you prefer ultralight equipment, you might manage with a smaller pack, but if you carry more traditional gear, you’ll likely need a larger backpack to fit everything comfortably.
- Water and Food Supply: Consider how much water and food you’ll need to carry. If you have access to water sources along your route, a smaller pack may work; however, if you’re planning to carry multiple days’ worth of food, you will need a larger volume to accommodate those supplies.
- Comfort and Fit: The pack’s fit is crucial for your comfort during a long hike. A backpack that is too large can cause instability and fatigue, while one that is too small may not distribute weight properly, leading to discomfort. It’s essential to try on different sizes to find the best fit for your body type.
What Are the Typical Volume Range Recommendations for Thru Hiking in Colorado?
The typical volume range recommendations for thru hiking in Colorado vary based on the duration of the hike and individual needs.
- 30-50 Liters: This size is ideal for lightweight or short-term hikes, typically lasting 1-3 days. Hikers can carry essentials such as a sleeping bag, food, and a lightweight tent without excess weight, allowing for greater mobility along the often challenging Colorado trails.
- 50-70 Liters: Recommended for multi-day hikes of 4-7 days, this volume allows for additional gear, including a more substantial sleeping system and extra food supplies. Hikers can also pack layers for changing weather conditions in Colorado’s mountainous terrain, making this size versatile for varying climates.
- 70+ Liters: This size is suitable for extended hikes, typically longer than a week, where carrying more gear is necessary. Hikers using this volume can bring heavier items like cooking equipment and extra clothing, but they should be mindful of the added weight, which can affect their stamina and efficiency on the trail.
What Features Should I Look for in a Backpack for a Colorado Thru Hike?
When selecting a backpack for a Colorado thru hike, consider the following features:
- Capacity: The best size backpack for a Colorado thru hike typically ranges from 50 to 70 liters, allowing enough space for essential gear and food for extended periods.
- Weight: A lightweight backpack is crucial, ideally under 5 pounds, to reduce fatigue while hiking long distances across the varied terrain of Colorado.
- Durability: Look for materials like ripstop nylon or high-denier fabrics that can withstand the rugged conditions of the Colorado wilderness and resist wear and tear from branches or rocks.
- Comfort and Fit: An adjustable suspension system, padded shoulder straps, and a hip belt are critical for proper weight distribution and comfort during long hikes.
- Weather Resistance: An integrated rain cover or water-resistant materials will help protect your gear from sudden weather changes, which are common in Colorado.
- Pockets and Organization: Multiple compartments, including side pockets and a top lid, help keep your gear organized and accessible, making it easier to find essentials on the trail.
- Hydration Compatibility: Look for backpacks that accommodate hydration reservoirs or have external pockets for water bottles, ensuring you stay hydrated during your hike.
- Ventilation: A backpack with a mesh back panel or ventilation channels can improve airflow, helping to keep your back cool and dry during strenuous hikes.
How Important is Weight in Choosing a Backpack for Thru Hiking?
The capacity vs. weight ratio helps hikers determine how much gear they can carry without the backpack becoming too heavy. A backpack that is too large may encourage packing excess weight, while one that is too small could force compromises on necessary gear.
The frame type affects not only the weight but also how the backpack carries. Internal frames tend to be more popular for thru-hiking because they provide better support and allow for a closer fit to the body, which helps with balance and reduces fatigue.
Considering the weight of essential gear, such as sleeping bags, cooking equipment, and food, is critical in determining the appropriate backpack size. It’s important to choose a backpack that accommodates all necessary items without exceeding a manageable weight limit.
Finally, adjustability and fit play a significant role in how a backpack feels during a hike. A well-fitted backpack that can be adjusted to the hiker’s body ensures better weight distribution, making it feel lighter even if the actual weight remains the same.
What Level of Durability and Weather Resistance Do I Need?
Lastly, investing in high-quality zippers and buckles will reduce the risk of malfunction during your hike, while load lifters and compression straps help keep your gear secure and evenly distributed, minimizing the chance of wear from shifting loads.
How Can I Optimize My Backpack Packing for a Multi-Day Thru Hike?
Using compression sacks for sleeping bags and clothing can significantly reduce space and help organize your backpack. These sacks compress bulky items into smaller sizes, making it easier to fit everything into your pack. Additionally, they help keep your gear dry and protected from the elements.
Opt for multi-use gear, such as a water filter that doubles as a hydration system, to save space and weight. This approach allows you to carry fewer items while still meeting your needs on the trail. By thinking creatively about your gear, you can streamline your packing and enhance your hiking efficiency.
What Packing Strategies Help to Balance Weight and Accessibility?
Several packing strategies can help you balance weight and accessibility for a Colorado thru-hike.
- Weight Distribution: Properly distributing weight in your backpack can significantly affect your comfort and performance. Place heavier items close to your back and near your center of gravity to maintain balance and reduce strain on your body.
- Accessibility Zones: Organize your gear into accessible zones based on usage frequency. Keep frequently used items like snacks, maps, and first aid kits in external pockets or the top compartment for easy access, while storing less frequently used items deeper in the pack.
- Compression Sacks: Using compression sacks can help manage weight and bulk. These bags allow you to pack clothes and sleeping gear tightly, making it easier to fit everything into your backpack while keeping it organized and accessible.
- Packable Gear: Opt for packable, lightweight gear that can easily be stowed away when not in use. Items like inflatable pillows or compact cooking gear can save space and reduce overall weight, making your backpack easier to carry.
- Modular Packing: Implement a modular packing system where you group similar items together in pouches or bags. This way, you can quickly grab an entire pouch for cooking or personal items without rummaging through your entire pack, enhancing accessibility.
- Use of Hydration Reservoirs: Hydration reservoirs can save space and make water access more convenient. Instead of carrying multiple bottles, a reservoir allows for easy sipping through a hose, keeping your hands free for other tasks during your hike.
What Essential Gear Must Be Included for a Successful Thru Hike in Colorado?
Essential gear for a successful thru hike in Colorado includes a variety of items that ensure safety, comfort, and sustainability on the trail.
- Backpack: A well-fitted backpack is crucial, and for a Colorado thru hike, a size between 50-65 liters is often ideal. This size offers enough capacity to carry all necessary gear while remaining manageable for long distances.
- Sleeping System: A lightweight sleeping bag rated for cold temperatures and a compact sleeping pad are essential for restful nights. The sleeping bag should ideally be compressible and suitable for the expected weather conditions, while the sleeping pad provides insulation and comfort from the ground.
- Clothing Layers: Layering is key in Colorado’s variable weather, so a combination of moisture-wicking base layers, insulating mid-layers, and waterproof outer layers is necessary. This system allows hikers to adapt to changing temperatures and stay dry in unexpected rain or snow.
- Navigation Tools: A reliable map and compass, or a GPS device, are essential for navigating Colorado’s trails. Since some areas might lack cell service, having physical maps and knowing how to use them ensures you can stay on track.
- Water Filtration System: Access to clean water is critical, so a portable water filtration system or purification tablets should be included in your gear. This allows hikers to refill their water supply from natural sources along the trail while minimizing the risk of waterborne illnesses.
- First Aid Kit: A comprehensive first aid kit tailored for hiking is vital for addressing minor injuries and ailments. It should include items like band-aids, antiseptic wipes, pain relievers, and any personal medications needed during the hike.
- Food Supply: Lightweight, high-energy food options are crucial for maintaining stamina during long hikes. Dehydrated meals, energy bars, and trail mixes are popular choices because they are easy to pack and prepare on the go.
- Headlamp or Flashlight: A reliable light source is essential for navigating in the dark or during early morning starts. A headlamp is often preferred as it keeps your hands free for other tasks, and choosing one with a long battery life will ensure it lasts throughout the hike.
- Emergency Gear: Items such as a whistle, multi-tool, and emergency blanket can be lifesavers in unforeseen situations. These tools enhance safety by allowing hikers to signal for help and perform basic repairs on gear.
- Cooking System: A lightweight stove, fuel, and cooking pot are vital for preparing meals on the trail. Opting for a compact cooking system saves space in your backpack while providing the means to heat water and cook food quickly.