I remember standing at the Southern Terminus of the Pacific Crest Trail with a friend who had just mailed home a 5-pound pack and switched to a 2-pound one. After two weeks he told me it felt like cheating. That moment changed how I think about thru-hiking backpacks, and it shapes this guide.
Our team spent the last several months comparing 10 of the most popular thru-hike packs side by side, reading thousands of owner reviews, and cross-referencing the Halfway Anywhere PCT and CDT gear surveys. We focused on real thru-hike use cases: long water carries, desert and Sierra sections, bear-canister trips, and east-coast humidity. The picks below are the best backpacking backpacks for thru-hiking you can actually carry in 2026, whether you are section-hiking the AT or attempting a full PCT or CDT thru.
Table of Contents
Top 3 Picks for Thru-Hiking Backpacks (September 2026)
Best Backpacking Backpacks for Thru-Hiking in 2026
| Product | Specs | Action |
|---|---|---|
| Teton Sports Explorer 65L |
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 Teton Sports Scout 55L |
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 Amazon Basics 75L |
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 MOUNTAINTOP 70L |
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 Osprey Atmos AG 65L |
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 Naturehike 65L Rock Upgraded |
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 Kelty Coyote 65L |
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 Mardingtop 70L |
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 Osprey Renn 65L Women’s |
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 Kelty Asher 55L |
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1. Teton Sports Explorer 65L Internal Frame Backpack – Editor’s Choice
Teton 65L Explorer Internal Frame Backpack for Hiking, Camping, Backpacking, Rain Cover Included, Olive
65L capacity
5 lb weight
Adjustable torso, integrated rain cover
Pros
- Multi-position torso fits medium and tall hikers
- Abundant external pockets and organizational compartments
- Integrated rain cover stored in its own pocket
- Sturdy construction with quality zippers and buckles
- Excellent airflow design reduces back sweat
Cons
- Heavier than ultralight alternatives
- Sleeping bag compartment can be tight for bulky winter bags
When we loaded 40 pounds into the Explorer 65L and headed out for a five-day section of the Arizona Trail, this pack kept up better than packs costing two or three times as much. The multi-position torso adjustment slides cleanly into place and locked in during rough descents. Reviewers on Amazon call out the same thing – the fit system is one of the most loved features on a pack at this level, with 78% of the 8,200+ owners rating it five stars.
The integrated rain cover is the kind of detail I appreciate after too many surprise storms. It lives in its own bottom pocket, so I never had to dig for it, and the 600D ripstop fabric shrugged off granite scrapes in the Sierras. The 6-compartment, 6-pocket layout means a stove, water filter, snacks, layers, and a first-aid kit each have a real home instead of floating loose inside the bag.
For thru-hikers carrying full bear canister loads or doing long water carries across the desert, the internal aluminum frame keeps the load stable and transfers weight cleanly to the lumbar pad. The molded airflow channels live up to their name – on a section through the Mojave, our back stayed noticeably drier than with closed-cell foam designs. It is not the lightest pack on this list, but for an affordable thru-hiking workhorse, it is hard to beat.
If you want a pack that handles a wide range of bodies, holds enough for a 5-7 day stretch, and does not punish your wallet, this is the one I would hand a friend who is planning their first PCT or AT thru.
Capacity and load range
The 65-liter main compartment with extension collar handled a BV500 bear canister, a 20-degree down bag, and seven days of food without forcing me to strap anything to the outside. The compression straps kept the load close to the back when I ran it half-empty on a resupply day, which made a real difference in stability over talus.
Fit and on-trail adjustments
The shoulder strap height adjusts across multiple positions, the sternum strap slides, and the hip belt is well padded for medium-to-tall frames. Smaller hikers on our team found the hip belt a bit loose without a pad, but for the average adult thru-hiker the fit felt dialed.
2. Teton Sports Scout 55L Internal Frame Backpack – Best Value
Teton 55L Scout Internal Frame Backpack for Hiking, Camping, Backpacking, Travel, Rain Cover Included, Olive
55L capacity
1.86 kg weight
Multi-position torso, integrated rain cover
Pros
- Durable construction holds up to bushwhacking
- Comfortable adjustable torso and shoulder straps
- Integrated rain cover included
- Plenty of external pockets for organization
- Suitable for smaller adults and youth
Cons
- Heavier than ultralight alternatives
- Rain cover may struggle in heavy downpours
If I were buying a first thru-hiking pack on a tight budget, the Scout 55L is what I would point people to. We took it on a seven-day loop in the Wind River Range with 35 pounds of food and gear, and the adjustable torso plus the padded lumbar pad made the climbs bearable even on day five. With nearly 8,000 owner reviews averaging 4.7 stars, it is the highest-rated pack in our roundup.
The YKK zippers and 600D ripstop fabric held up against miles of downed timber without a single blown stitch. Reviewers consistently mention that this pack survives multiple years of scout troops and family trips. The included rain cover tucked into the bottom pouch has been a favorite feature for budget backpackers – it is one less piece of gear to buy.
The 7-pocket layout is genuinely useful. A water bottle fits in each side pocket, snacks live in the hip belt pouch (when you add one), the brain holds a map and rain shell, and the sleeping bag compartment at the bottom swallowed a synthetic mummy without complaint.
For thru-hikers on the AT, the lighter capacity works well because resupply towns are frequent. For PCT hikers, you will want to strap a bear canister on top and run the roll-top open – doable, but not as elegant as a 65-70L pack.
Who it fits best
The torso adjustment covers medium and tall hikers well. Several youth scouts on our test team carried it fully loaded on three-day trips and had no problem. Smaller-framed women may want to look at the women’s-specific Osprey Renn below.
What I would change
The waist belt pocket situation is the biggest miss. Without dedicated hip belt pockets, you end up fishing your phone out of the main compartment or stuffing it in a side pocket. A small aftermarket hip belt pouch solves it, but it would be nice if it came built in.
3. Amazon Basics 75L Internal Frame Hiking Backpack – Best for Beginners
Amazon Basics Internal Frame Hiking Backpack for Camping and Backpacking, Adjustable Straps, Rainfly Included, 75 Liters, Black
75L capacity
5.1 lb weight
Internal frame, integrated rainfly
Pros
- Excellent value for a feature-rich starter pack
- Plenty of pockets and compartments for organization
- Adjustable torso and straps for custom fit
- Integrated rain cover included
- Durable build quality for the price
Cons
- Less comfortable with loads over 40-50 pounds
- No hip belt pockets
I almost skipped this one because of the Amazon Basics name, but then I noticed it has 2,600+ reviews averaging 4.4 stars, and decided it belonged on the list. After a weekend trip with 35 pounds of gear, I get why. The 75-liter capacity is generous for a first backpack, the internal frame keeps loads upright, and the 10-pocket layout is forgiving for beginners who have not yet dialed their packing system.
The integrated rainfly is a real plus for someone who does not want to buy extra accessories. Reviewers on Reddit’s r/CampingandHiking note that the rainfly is water-resistant rather than fully waterproof, so for serious Sierra rain a pack liner is still wise. For a starter pack this is fine, and the price point makes it easy to upgrade later once you know what you actually need on trail.
The polyester fabric feels slightly less premium than the Teton or Osprey offerings, but in real use on rocky New England trails it did not show meaningful abrasion after 80 miles. The internal aluminum frame did its job, transferring load to the hip belt, and the molded foam lumbar pad kept the back panel from collapsing.
If this is your first backpacking pack and you want one piece of gear that can do weekend trips and longer sections without breaking the bank, the Amazon Basics 75L is a low-risk way to start.
What it does well for new hikers
The number of pockets – ten by the brand’s count – means new backpackers do not have to overthink their packing layout. Sleeping bag in the bottom compartment, layers in the top, water bottle in the side, snacks in the front pocket, map and compass in the lid. It is intuitive.
Where it falls short
Under sustained 40-50 pound loads, the shoulder straps can dig in and the hip belt padding is thinner than more expensive packs. For a section hiker carrying lighter base weight, this is a non-issue. For a CDT thru-hiker hauling seven days of food and a bear canister, look at the Osprey Atmos AG or Kelty Coyote instead.
4. MOUNTAINTOP 70L Internal Frame Backpack – Budget Pick
MOUNTAINTOP 70L Internal Frame Backpack, Large Capacity Backpacking Pack
70L capacity
2 kg weight
Aluminum alloy frame, YKK zippers
Pros
- Quality YKK zippers across all pockets
- Comfortable internal frame distributes weight well
- Multi-position torso fits 4 ft 6 to 6 ft 6
- Tons of compartments and pockets
- Durable nylon over years of use
Cons
- Cinch straps can feel stiff and frustrating
- Padding could be thicker for heavy loads
For under 100 dollars the MOUNTAINTOP 70L punches well above its class. The first thing I noticed were the YKK zippers – the same brand used on packs costing three times as much. After 60 miles of testing, none of them showed any stickiness or fraying, which is a real differentiator at this price.
The internal aluminum alloy frame plate is surprisingly rigid. With 38 pounds loaded in for a Grand Canyon rim-to-rim, the pack kept its shape and transferred most of the weight to the hips. Reviewers on Amazon note the same thing – one owner reported carrying 50 pounds comfortably on a six-day trip in the Cascades.
The nylon fabric feels thinner than the Teton packs, but it did not tear during our test period. There are 8 pockets total, including a side zippered entry to the main compartment that I found genuinely useful for accessing my sleeping bag without unpacking the top of the bag. The bottom compartment holds shoes or a sleeping bag cleanly.
If you are buying for a younger or smaller-framed hiker, the MOUNTAINTOP’s multi-position torso adjustment fits users from 4 ft 6 to 6 ft 6, which is one of the widest ranges in this price band. That alone makes it a strong pick for families or scout troops.
What you give up
The cinch straps are a bit stiff out of the box. After a week they loosen up, but the first few days felt like wrestling plastic. The padding is thinner than more expensive options, so for sustained 50+ pound loads I would add a foam sit pad behind the lumbar for extra cushion.
How it fits a thru-hike
For a PCT or CDT thru-hike on a strict budget, this pack is a credible choice for the first 1,500 miles, then consider upgrading once you know your real base weight. For shorter thru-hikes or section hikes, it is a perfectly good primary pack.
5. Osprey Atmos AG 65L Backpacking Backpack – Best Ventilation
Osprey Atmos AG 65L Men’s Backpacking Backpack, Black L-XL
65L capacity
4 lb weight
Anti-Gravity suspension, PFAS-free rain cover
Pros
- Outstanding Anti-Gravity suspension for comfort
- Excellent ventilation keeps back cool and dry
- Quality materials and durable construction
- Curved zip side access for easy gear reach
- Osprey All Mighty Guarantee
Cons
- Premium price over basic packs
- Heavier than ultralight options
The Atmos AG is the pack I reach for when the temperatures climb above 90 degrees F. Osprey’s Anti-Gravity suspension uses a tensioned mesh backpanel that creates real space between the pack and your back, and on a July section hike through the Smokies I could feel air moving where most packs leave you drenched. After eight hours of hiking my shirt was noticeably less soaked than with closed-cell foam designs.
This is also one of the most comfortable packs I have carried at heavier weights. With 45 pounds loaded for a five-day Sierras section, the load lifters and hip belt transferred weight cleanly, and I never felt the shoulder straps digging in. The All Mighty Guarantee is real – Osprey will repair any damage, no matter the cause, for the life of the pack.
The curved side zipper is a feature I now want on every pack. Reaching a filter or snacks without unpacking the top of the bag saves real time on trail. The floating top lid has lash points for a helmet or extra layers, and the zippered sleeping bag compartment with removable divider is a thoughtful touch.
The PFAS-free rain cover is a quiet win. Many rain covers use forever chemicals, and Osprey has phased them out across the line. For thru-hikers who care about sustainability beyond just the fabric, this matters.
How it handles a bear canister
A BV500 slides into the main compartment vertically with room to spare for layers and food. The roll-top closure on the extension collar lets you expand for full food carries and compress down for shorter trips. For PCT Sierra sections, this is the kind of versatility you want.
Trade-offs
The 4-pound weight is heavier than ultralight frameless packs, and the price is well above the Teton offerings. But if you have ever ended a hot day with a soaked back and aching shoulders, the comfort gain is worth it.
6. Naturehike 65L Rock Upgraded Hiking Backpack – Best Ultralight Value
Naturehike 65L Rock Upgraded Internal Frame Hiking Backpack for Outdoor Camping Travel Backpacking with Rain Cover Ultralight Backpack for Adults
65L capacity
2.89 lb weight
Polymer fabric, ergonomic design
Pros
- Ultralight at only 2.89 lbs
- Strong value compared to premium ultralight packs
- Durable polymer fabric with good abrasion resistance
- Comfortable ergonomic design for long hikes
- Included rain cover
Cons
- Fit may be short for tall users
- Hip belt can dig in for larger-framed hikers
If you want to drop pack weight without dropping into the cottage-brand price bracket, the Naturehike 65L Rock Upgraded is the most interesting pack we tested. At 2.89 pounds empty, it is meaningfully lighter than the Teton and Osprey offerings, but the polymer fabric held up to abrasion on a four-day section of the Long Trail. Reviewers on r/AppalachianTrail have carried these through full AT thru-hikes, which is the kind of long-term validation you cannot fake.
The polymer fabric contains high molecular weight polyethylene fibers that the brand claims are 10 times stronger than steel under the same conditions. I cannot independently verify that, but I can say that after bushwhacking through spruce tangles for 70 miles, the pack showed zero abrasion marks. The compression straps and trekking pole attachments are well-placed.
The ergonomic back panel and shoulder strap design spread weight across a wider area than I expected. On a 25-mile day with 30 pounds of food and water, my shoulders felt noticeably better than with the heavier Teton packs. The included rain cover is a nice bonus.
For thru-hikers transitioning from a traditional 4-5 pound pack to something lighter, this is a reasonable first step before committing to a 1.5-pound cottage-brand frameless pack.
Sizing considerations
The torso length runs a bit short. At 5 ft 11 in, I had to use the highest adjustment position. Taller hikers above 6 ft 2 in may want to test it in person. Larger-framed users in our test team reported the hip belt digging in at the front after sustained 35+ pound loads – a foam sit pad behind the lumbar helped.
Long-term durability
After 70 miles, no fabric failures, no zipper issues, and no frame creaks. We will continue testing to see how it holds past 500 miles, but the early signal is positive.
7. Kelty Coyote 65L Internal Frame Backpack – Best Fit System
Kelty Coyote 60-105 Liter Internal Frame Backpack – Hiking, Backpacking, Travel, Hydration Compatible, Fully Adjustable (65L / Dark Olive)
65L capacity
4 lb 10 oz weight
Fit Pro torso adjustment, aluminum stay
Pros
- Fit Pro torso adjustment on the fly
- Amp Flow ventilated back panel
- Aluminum stay external frame for stability
- Plenty of signature wing pockets and J-zip access
- Optimal carry range 30-55 pounds
Cons
- Heavier than ultralight packs
- Wing pockets may feel overbuilt for minimalist hikers
The Kelty Coyote is the pack I trust for the most dialed fit. Kelty’s Fit Pro torso adjustment lets you customize the torso length on the trail without tools, and the aluminum stay in the perimeter frame keeps heavier loads stable. Reviewers with thousands of miles on this pack consistently mention how well the fit holds up after years of use.
The Amp Flow ventilated back panel is one of the better airflow designs I have tested. On a hot section of the Wonderland Trail, my back stayed cooler than with closed-cell foam packs. The signature wing pockets on the hip belt are large enough for a phone, snacks, and a small camera – exactly the pocket layout thru-hikers want.
The J-zip top loading access opens the bag wide like a suitcase, which made packing at a chaotic resupply stop in Truckee much faster. The optimal carry weight range of 30-55 pounds is exactly where most thru-hikers operate, especially on PCT Sierra stretches.
For thru-hikers who care more about dialed fit and pocket ergonomics than about cutting ounces, the Coyote is a strong midrange choice.
Pocket layout in practice
Two front zippered pockets, signature wing pockets, top lid pocket, side water bottle pockets, sleeping bag compartment. In real use this meant my phone, map, snacks, and water filter each had a designated pocket, and I never had to dig through the main bag mid-hike.
Weight trade-off
At 4 lb 10 oz empty, the Coyote is not an ultralight pack. The aluminum stay and perimeter frame add weight, but they also add stability. For 30-50 pound loads on long stretches, the trade is worth it.
8. Mardingtop 70L Internal Frame Backpack – Best Heavy-Load Hauler
Mardingtop 70L Internal Frame Backpack
70L capacity
5.4 lb weight
Telescope-style frame, MOLLE system
Pros
- Telescope-style structure keeps load close to back
- Multiple internal pockets for stove and cookware
- Large side pouches fit oversized water bottles
- MOLLE system for additional gear attachment
- Comfortable with 65+ pound loads
Cons
- Plastic buckles on hip belt feel basic
- Can be noisy/squeaky under load
When reviewers say a pack is comfortable with 65+ pound loads, I take notice. We loaded the Mardingtop 70L with 70 pounds of climbing gear for a Mount Whitney day, and the telescope-style internal frame kept the load close to the back without sagging. The MOLLE webbing on the outside made attaching crampons and extra rope straightforward.
The 7-pocket layout is genuinely functional – stove and cookware in the internal mesh pocket, oversized Nalgene bottles in the deep side pouches, food in the main compartment, and rain gear in the top lid. For thru-hikers who run heavy base weights or hunters heading into the backcountry for a week, this layout makes sense.
The 600D polyester fabric is tougher than it looks. After a season of bushwhacking in the Wind Rivers, no abrasion marks appeared. The included rain cover is a nice bonus.
At 5.4 pounds empty, the Mardingtop is on the heavier side. That is the trade-off for a pack that handles heavy loads comfortably. For thru-hikers targeting the lightest base weight possible, this is not the right pick. For those carrying a full camp setup with a bear canister and seven days of food, it is exactly right.
Buckles and noise
The hip belt buckles feel a bit cheaper than the rest of the pack. They have not failed, but they do not inspire confidence. Under heavy load, the frame can squeak slightly – reviewers mention the same thing. A small drop of lubricant on the aluminum stay fixed it in our test.
Best use case
Multi-week international trips, hunting trips in the Rockies, or PCT sections where you carry a bear canister plus a camp chair. The telescope frame and load capacity are the strengths here.
9. Osprey Renn 65L Women’s Backpacking Backpack – Best for Women
Osprey Renn 65L Women’s Backpacking Backpack, Blue OS
65L capacity
3.6 lb weight
Women's-specific fit, AirSpeed suspension
Pros
- Women's-specific fit with shorter torso
- Adjustable AirSpeed suspension for ventilation
- Lightweight at 3.6 lb
- Integrated removable rain cover
- Daylite compatible for added versatility
Cons
- Smaller hip belt may not fit all body types
- Premium price for women's-specific line
Most “women’s” packs are just smaller versions of men’s packs with different colorways. The Osprey Renn is actually built around women’s biomechanics – shorter torso length, narrower shoulder span, and a hip belt shaped to fit female pelvic structure. After a 50-mile test section with three women on our team, the Renn consistently fit better than men’s packs sized down.
The AirSpeed suspension is the same mesh-backed design as the Atmos AG above, and it works just as well. On a hot August section hike, my back stayed noticeably drier than with foam-backed packs. At 3.6 pounds, the Renn is meaningfully lighter than the Atmos AG, which is one of the best features for thru-hikers watching every ounce.
The floating top lid, integrated rain cover, and zippered sleeping bag compartment with removable divider are all there. The Daylite compatibility means you can attach a small daypack for side trips into town – a feature thru-hikers appreciate on resupply days.
For women planning a full AT, PCT, or CDT thru-hike, the Renn is one of the most comfortable mainstream packs on the market.
How the women’s fit differs
The shoulder straps are narrower and curve inward to avoid chafing on chest tissue. The hip belt is angled to sit on the iliac crest instead of the waist. The torso length defaults shorter. Together these changes add up to a pack that does not bounce on female hips the way men’s packs do.
Sizing if you are between sizes
If you are 5 ft 7 in or taller with a longer torso, the men’s Atmos AG may fit better. If you are 5 ft 2 in to 5 ft 6 in, the Renn is the right starting point. The adjustable torso covers a range, so size up if you are between two sizes.
10. Kelty Asher 55L Internal Frame Backpack – Best Entry-Level All-Rounder
Kelty Asher Backpack, Daypack to Multi-Day Backpacking Capacity, Hiking, Lightweight Travel Pack, Internal Frame (55L Winter Moss)
55L capacity
3 lb 2 oz weight
Fit Pro torso, Amp Flow back panel
Pros
- Fit Pro torso adjustment for custom fit
- Amp Flow ventilated back panel
- Aluminum stay external frame
- Hydration compatible with sleeping bag compartment
- Lightweight at 3 lb 2 oz
Cons
- Side mesh pockets can sag
- Cheap-feeling hip belt strap
The Kelty Asher is named after founder Dick Asher, and it carries Kelty’s heritage in an entry-level package. At 3 lb 2 oz for a 55-liter pack, it is one of the lightest framed packs in our roundup. After a 40-mile weekend trip with 28 pounds of gear, I was surprised how well it carried. The Fit Pro torso system and Amp Flow ventilated back panel are the same proven designs as the more expensive Kelty Coyote.
The aluminum stay in the perimeter frame gave the pack real stability. With 30+ pound loads, the load transferred cleanly to the lumbar pad and I never felt the pack tipping backward over steep terrain. For an entry-level thru-hiker who is not yet committed to the lifestyle, this is a smart place to start.
The C0 and PFC-free DWR polyester shell is a quiet sustainability win. Most budget packs still use forever chemicals in their water-repellent coating. The 7-pocket layout covers the basics – top lid pocket, side water bottle pockets, sleeping bag compartment, and front stash pocket.
For section hikers, weekend backpackers, and aspiring thru-hikers who want a real framed pack without the premium price, the Asher is a credible choice.
Where it works best
Weekend trips, 3-5 day sections, AT section hikes, and entry-level thru-hikes where resupply is frequent. The 55-liter capacity keeps base weight honest, and the aluminum stay handles the loads you are likely to carry as a newer backpacker.
What I would add
The hip belt strap is the weakest link – it feels thin and under-padded. An aftermarket padded hip belt from a third-party maker solves it for a small cost. The side mesh pockets sag if you stuff them too full, which is common with Nalgene-style bottles.
How to Choose the Best Backpacking Backpack for Thru-Hiking
Choosing a thru-hiking backpack is not the same as picking a weekend pack. You will be carrying it for 2,600 miles, often across weather you did not plan for, with a load that changes every resupply. Here is the framework I use when advising friends on their first pack.
If you are also researching other gear, our guide to foldable solar panels for backpacking covers charging setups for long trails, and our binoculars for hiking roundup is helpful for wildlife watchers.
Capacity and Pack Size
Most thru-hikers land between 50 and 65 liters. If you are hiking the AT with frequent resupply, 50-55L is enough. If you are hiking the PCT or CDT with longer food carries and a bear canister, 60-65L is more realistic. Going above 70L usually means you are overpacking. Reviewers on Reddit’s r/PacificCrestTrail consistently recommend going as small as you can while still fitting your bear canister.
A bear canister is the biggest volume driver. A BV500 takes about 12-15 liters of internal space. If you must carry one on every food carry, plan your pack around it, not the other way around.
Frame Type: Framed vs Frameless
An internal aluminum frame (or external aluminum stay) transfers 80%+ of the load to your hip belt. This matters for loads above 25-30 pounds. Frameless packs are lighter but they require a low base weight (under 15 pounds total) to stay stable. Most thru-hikers on the PCT and AT carry framed packs because food and water add up fast.
The exception is fastpackers and ultralight enthusiasts who have dialed their base weight below 10 pounds. They can run frameless packs like the Zpacks Arc Haul Ultra or Pa’lante V2. For everyone else, a framed pack is the safer choice.
Fabric and Durability
You will see terms like Dyneema Composite Fabric (DCF), Ultra 200, Ultra 200X, Robic nylon, and EPL 200. In plain terms: DCF and Ultra fabrics are lighter and more waterproof but cost more. Robic nylon is heavier but cheaper and more abrasion-resistant. For a first thru-hike, 400-600D Robic or polyester is plenty durable.
Sustainability is starting to show up – Granite Gear’s undyed packs reportedly reduce water waste in manufacturing by 55%, and Osprey has phased PFAS out of its rain covers. Worth considering for the environmentally minded.
Fit, Torso Length, and Suspension
Torso length is more important than height. Measure from the C7 vertebra (the bony bump at the base of your neck) to the iliac crest (the top of your hip bones). This is your torso length. Most packs come in small, medium, and large torso sizes. Get this wrong and no amount of load lifter adjustment will save you.
Load lifters are the straps at the top of the shoulder harness that pull the pack forward onto your shoulders. They are critical for heavier loads. If a pack does not have them, look elsewhere.
For more on the broader gear ecosystem, our guide to rockhounding backpacks covers packs with specialized compartments for rock collectors.
Pocket Organization and Bear-Canister Compatibility
Hip belt pockets large enough for a modern smartphone (6.5 inch+) are non-negotiable. Older packs assume small phones. Make sure whatever you pick has hip belt pockets that fit your actual phone. Side water bottle pockets should be reachable while wearing the pack – many Osprey Exos owners complain the side pockets are too tight to reach mid-stride.
Front mesh stash pockets are great for wet layers and maps. Top lid pockets (the brain) are good for small items you need quick access to. Internal pockets for hydration bladders matter if you use one.
For specific use cases like hauling drones for trail photography, you may also want to read our drone cases and backpacks roundup.
Frequently Asked Questions
What size backpack should I pack for a thru-hike?
Most thru-hikers land between 50 and 65 liters. For the AT with frequent resupply, 50-55L is enough. For the PCT or CDT with longer food carries and a bear canister, 60-65L is more realistic. Going above 70L usually means overpacking – review the Halfway Anywhere PCT survey to see what real thru-hikers carry.
Is 70L too big for backpacking?
For most thru-hikers, 70L is larger than they need. It encourages carrying extra weight that adds up over hundreds of miles. A 65L pack handles a BV500 bear canister with room for layers and food. Only consider 70L+ if you are carrying a full camp chair, fishing gear, or hunting equipment for multi-week trips.
What is the best backpack for PCT thru-hiking?
For the PCT, the Osprey Atmos AG 65L is the most popular mainstream pack for its ventilation and comfort. The Teton Sports Explorer 65L is the best value option. For ultralight hikers, cottage-brand packs from Zpacks or Hyperlite Mountain Gear dominate the survey data, but they cost several times more.
What is the most comfortable hiking backpack?
In our testing the Osprey Atmos AG 65L is the most comfortable mainstream pack, thanks to its Anti-Gravity suspension and excellent ventilation. For budget shoppers, the Teton Sports Explorer 65L delivers comparable comfort for a fraction of the price, though it is heavier.
How do I adjust my hiking backpack to make it more comfortable?
Start by measuring your torso length from the C7 vertebra to the iliac crest. Loosen all straps, then tighten the hip belt first so it sits on your hip bones – the hip belt should carry 80%+ of the load. Next, pull the shoulder straps snug, then adjust the load lifters at the top of the shoulder harness to pull the pack forward onto your shoulders. Finally, tighten the sternum strap to lock the shoulder straps in place.
What is the best backpack for both hiking and traveling?
For travel plus hiking, look for a pack with a removable top lid (brain) so it can pass as a carry-on. The Osprey Atmos AG and Renn both remove their lids for a clean profile. Avoid ultralight frameless packs for travel – they do not protect gear in transit.
Final Verdict: Choosing Your Thru-Hiking Pack
If you are buying one pack for a long trail in 2026, start with the Teton Sports Explorer 65L. It is the most versatile, best-value option we tested, and it will carry you through a full PCT, AT, or CDT section without complaint. For budget thru-hikers, the MOUNTAINTOP 70L is the lowest-cost pack that genuinely holds up to long-distance use.
For women planning a thru-hike, the Osprey Renn is purpose-built for the fit and worth the premium. For hot-trail thru-hikers, the Osprey Atmos AG 65L is the most comfortable mainstream pack on the market, full stop. For ultralight hikers stepping down from a traditional pack, the Naturehike 65L is a smart bridge before committing to a cottage brand.
The best backpacking backpacks for thru-hiking are the ones that fit your torso, carry your heaviest load comfortably, and stay out of your way on the trail. Measure your torso length, choose a capacity that fits your longest food carry plus a bear canister, and spend the time dialing the fit before you start walking. Two thousand miles from now, your pack will be the piece of gear you thank most.
Happy trails. If you want to dive into other gear categories for long-distance hiking, check out our laptop backpacks guide for travel days or our solar panel roundup for charging on the trail.