Best Ultralight Backpacks for Weekend Treks in 2025 | Gear Guide

Lightweight hiking backpacks on mountain trail during sunrise


🏞️ Ultralight Backpacks for Weekend Treks: Hike Light, Go Far

Let me tell you a little something from the trail…

A few years ago, I was lugging around a bulky 5-pound backpack on a two-night trip in the Sahyadris. By the second day, my shoulders were screaming, and I had to ditch a few things (sorry, extra socks) just to make it bearable. That’s when I promised myself: never again without going ultralight.

Whether you're hiking the lush pine trails of Himachal or navigating rocky slopes out west, your backpack is your lifeline. And trust me, cutting down weight without compromising comfort? Game changer.


🧭 Why Go Ultralight for Weekend Treks?

If you've ever huffed and puffed up a steep trail with 30 lbs strapped to your back, you already know the answer. The less you carry, the more you enjoy the journey. It's that simple.

Here’s what you’ll notice when you go ultralight:

  • Way less fatigue on long hauls
  • Easier trail navigation and better balance
  • More room for just what you need, nothing extra
  • A surprising mental boost—seriously, you feel free


🎒 My Favorite Ultralight Backpacks for 2025 Weekend Treks

These aren’t just any packs. I picked them based on field use, gearhead chats, and a little trial and error of my own. Here are five that punch above their weight (pun totally intended).


🥇 1. Osprey Exos 48 Ultralight Pack

🛒 Buy Now
📦 Weight: 2.5 lbs
🎒 Capacity: 48 L
🏕️ Ideal For: 2–3 day mountain hikes or fastpacking

Why I like it:
This one saved my back during a high-altitude trek near Roopkund. The mesh back panel? Chef’s kiss. It practically floats on your spine.

✅ Pros:

  • Ridiculously good back ventilation
  • Option to remove the top lid and save weight
  • Holds shape even when half-full

❌ Cons:

  • Not built for heavy loads—pack light or pay the price

🥈 2. Granite Gear Crown 3 60

🛒 Buy Now
📦 Weight: 2.2 lbs
🎒 Capacity: 60 L
🏕️ Ideal For: Campers who carry a little extra “just in case”

Why I like it:
It’s like a Tetris master. Everything finds a place. The suspension system really shines when you’re carrying cooking gear or a bear canister.

✅ Pros:

  • Customizable fit
  • Distributes weight like a dream
  • Weather-resistant coating

❌ Cons:

  • Adjustments take some getting used to

🥉 3. Zpacks Arc Blast 55

🛒 Buy Now
📦 Weight: 1.1 lbs
🎒 Capacity: 55 L
🏕️ Ideal For: Hardcore ultralight hikers & desert solo trips

Why I like it:
This thing is absurdly light. It's like hiking with a cloud strapped to your back. Perfect for those who count every gram.

✅ Pros:

  • Dyneema is tough, waterproof, and weightless
  • Compresses like a sleeping bag
  • Ultralight backpackers’ dream

❌ Cons:

  • The hip belt lacks some padding
  • Pretty steep price tag


4. REI Co-op Flash 55

🛒 Buy Now
📦 Weight: 2.4 lbs
🎒 Capacity: 55 L
🏕️ Ideal For: Weekend hikers on a budget

Why I like it:
Bang for your buck. It’s not the fanciest, but it’s reliable and comes with just enough bells and whistles.

✅ Pros:

  • Removable bits to shave off ounces
  • Affordable without being cheap
  • Feels roomy for a 55L

❌ Cons:

  • Not the most breathable padding, especially in the heat

5. Gossamer Gear Mariposa 60

🛒 Buy Now
📦 Weight: 2 lbs
🎒 Capacity: 60 L
🏕️ Ideal For: Hikers who like pockets and organization

Why I like it:
Carried this one during a monsoon trek in the Western Ghats. Stayed dry, stayed comfortable, and I could actually find things without digging.

✅ Pros:

  • Smart storage layout
  • Supports heavier gear better than expected
  • Great water resistance

❌ Cons:

  • Sizing on the hip belt can feel a little snug

🧪 Quick Comparison Table

BackpackWeightCapacityBest ForMaterial
Osprey Exos 482.5 lbs48LThru-hikesNylon
Granite Gear Crown 3 602.2 lbs60 LComfort + StorageRobic Nylon
Zpacks Arc Blast 551.1 lbs55LUltralight MinimalismDyneema
REI Co-op Flash 552.4 lbs55LBudget HikersRecycled Nylon
Gossamer Gear Mariposa 602.0 lbs60 LLong WeekendsRobic Nylon

🧩 What Actually Matters When Picking a Pack?

It’s not just about shaving ounces—it’s about how your body feels mile after mile.

✅ Key Things to Consider:

  • Fit & Suspension—A well-fitted hip belt is like magic
  • Material Strength—Dyneema and Robic Nylon last longer than your trail snacks
  • Pockets & Layout – Don’t underestimate a good side pocket
  • Ventilation—Breathable backs mean less sweat and swampy back
  • Removables—Take off the lid or straps when you don’t need them.


🏕️ Best Packs by Scenario

  • 🏔️ Mountain Trails?Osprey Exos 48 for airflow and structure
  • 🌲 Forest Overnights?REI Flash 55 gets the job done affordably
  • 🌵 Dry Desert Hikes?Zpacks Arc Blast—because water weight is real


💬 Real-World Thoughts

“The Mariposa 60 let me pack my bear canister and my tent—and still felt light as heck.” – Sierra Hiker, CA

“Three weekends with the Crown 3 and not once did my shoulders complain. That’s rare for me.” – Trail Dad, NC


🎯 Final Trail Thoughts

If you’re just dipping your toes into ultralight hiking, don’t overthink it. Start with a lightweight but comfy pack—sub-3 lbs is a good goal. Then build your gear around it.

Pro Tip:

Pair it with ultralight cookware, a down quilt, and a compact water filter. Your future knees will thank you.


🛍️ Want to Lighten Your Load?

👉 Check Out the Best Ultralight Backpacks Here
✅ Trusted brands only
✅ Hiker-reviewed, real-world tested
✅ Fresh list for 2025


🙋‍♂️ Frequently Asked Questions (FAQs)

🔹 What is considered an ultralight backpack?

An ultralight backpack typically weighs under 3 pounds when empty. They're built for minimalists and weekend hikers looking to shed weight without losing function.

🔹 Are ultralight backpacks durable enough for rocky or wet terrain?

Yes, especially those made from Dyneema or Robic nylon. Packs like the Zpacks Arc Blast and Granite Gear Crown 3 can handle rough trails and moisture pretty well.

🔹 How much can I carry in a 55L ultralight backpack?

For weekend treks, 55L is usually more than enough. You can comfortably carry your sleeping bag, shelter, food, and extras—just pack smart and skip the non-essentials.

🔹 Which ultralight backpack is best for beginners?

The REI Flash 55 is a great starting point—budget-friendly, comfortable, and customizable. It's forgiving if you're still figuring out what you need.

🔹 Can I use an ultralight pack for longer thru-hikes?

Absolutely. Just make sure your other gear is ultralight too. Many thru-hikers swear by the Zpacks Arc Blast or Osprey Exos for longer trails like the PCT or Appalachian Trail.