By Lauren HollandUpdated November 2026
An ultralight backpacking gear list REI shoppers can actually use starts with one number: base weight, the total of everything you carry except food, water and fuel. This guide shows you how to sort your kit into categories, set a realistic base weight target for your trip length, and fill the gaps without overbuying. By the end, you will have a checklist you can shop from and weigh against.
Set Your Base Weight Target First
Before you buy anything, pick a target. Many ultralight hikers aim for a base weight under 10 lb for three-season trips, while a sub-5 lb target is generally reserved for experienced hikers willing to accept less comfort and fewer backups. Decide your number now, because it determines which items you can justify carrying.
Shopping for one? See our guide: 4 Best Ultralight Hiking Backpacks for Trail Days (2026).
Weigh every item on a kitchen or digital scale and record it. A spreadsheet with columns for item, weight and category will show you where the grams are hiding.
Choose the Big Three: Pack, Shelter and Sleep System
The pack, shelter and sleep system usually make up more than half of base weight, so start here. Look for a pack that carries your gear comfortably at roughly 15 to 20 lb without a frame, and a shelter sized for your trip and tent footprint. For the sleep system, match the sleeping bag or quilt temperature rating to the coldest night you expect, and add a sleeping pad with an R-value appropriate for the ground temperature.
Fill In Clothing, Kitchen and Navigation
Clothing should follow a layering system: one base layer for sleeping and one for hiking, a insulating layer, a wind and rain shell, and a warm hat and gloves. Keep the kitchen minimal: a small stove, a single pot, a spork and a lighter. For navigation, carry a paper map, a compass and a phone with offline maps downloaded. The Rei Backpacking Gear List: A Step-by-Step Packing Guide for Beginners covers the same categories in more detail if you want a second reference.
Packing Checklist
- Backpack sized to your trip and load
- Shelter, stakes and guylines
- Sleeping bag or quilt and sleeping pad
- Layers: base, mid, insulation, shell
- Stove, fuel, pot and utensil
- Water filter and two water containers
- Headlamp with spare batteries
- First-aid kit, repair tape and knife
- Map, compass and charged phone or power bank
Compare Trip Lengths Before You Pack
A weekend kit and a week-long kit differ mostly in consumables and clothing. A Weekend Backpacking Gear List: 18 Items for a Two-Night Trip needs far fewer spare layers and less fuel than a longer route. For multi-day routes, a Multi Day Backpacking Gear List: Build Yours by Base Weight helps you scale the list. Solo hikers should also review a Solo Backpacking Gear List: A Step-by-Step Packing Guide for safety items like a signaling device.
Common Mistakes
- Buying the lightest version of every item before checking your actual needs.
- Skipping a weight audit, so the pack drifts heavy over several trips.
- Carrying duplicate cooking or clothing items “just in case.”
- Forgetting that water weight can add more than 2 lb per liter.
- Ignoring fit: a pack that rides poorly makes any load feel heavier.
Recommended Gear
A digital scale lets you weigh each item and track base weight accurately. View on Amazon
A compact pot with a lid speeds up boiling and keeps fuel use low. View on Amazon
A small repair kit with tape and a needle handles torn fabric and tent seams in the field. View on Amazon
FAQ
What is a good base weight for ultralight backpacking?
Many hikers aim for under 10 lb for three-season trips, which is generally considered ultralight. Sub-5 lb is a stricter goal that usually requires experience and trade-offs in comfort and safety margin.
Do I need everything on an REI gear list?
No. Use the categories as a framework and cut anything you do not need for your climate, route and trip length. Redundancy should be limited to safety-critical items like navigation and light.
How often should I update my gear list?
Review your list after each trip, noting what you used and what you never touched. Adjust quantities and weights accordingly, and re-weigh new items before adding them.
Conclusion
An ultralight gear list works best when it starts from a base weight target and builds outward by category. Weigh everything, match your kit to the trip length, and cut duplicates before you buy replacements. Re-check the list after each outing so it stays honest.
Related reading
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About Lauren Holland
Lauren Holland is part of our editorial team and reviews and edits our backpacks & packing systems guides, checking product details against manufacturer specifications and owner feedback.
