What counts as ultralight backpacking?

Ultralight backpacking is generally defined as a base weight — everything excluding food, water and fuel — of under 5kg. Some go further and target under 3kg, which requires significant investment in premium gear and ruthless editing of every item you carry.

How much does a proper ultralight kit cost?

Expect to spend £800–1,500 for a genuinely ultralight three-season kit. The largest costs are a quality lightweight tent or shelter (£200–500), a down sleeping bag (£200–400) and a lightweight pack (£150–250). There are no shortcuts — ultralight kit costs more per gram saved.

Is ultralight backpacking less safe than traditional backpacking?

Not inherently, but it requires more experience and better decision-making. Lighter kit often means reduced margins — a tarp is less weatherproof than a tent, a lighter sleeping bag has a narrower temperature range. Ultralight backpacking suits experienced hikers who understand their conditions well.

What are the biggest weight savings when building an ultralight kit?

The shelter, sleeping bag and rucksack — the 'big three' — account for the most weight in a traditional kit. Reducing each of these significantly cuts overall base weight. Switching from a standard tent to a tarp or ultralight shelter alone can save 1–2kg.

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Updated this month

Ultralight Backpacking Kit Guide for UK Trails and Hills

Survivals editorialUpdated 2026-03-2510 min read

What Is Ultralight?

Category	Traditional	Lightweight	Ultralight
Base weight	12kg+	7–10kg	Under 5kg
Total weight	15–18kg	10–14kg	7–10kg
Pack size	60–75L	45–55L	30–40L
Cost	£300–600	£500–800	£800–1,500+

Base weight = everything in your pack except food, water and fuel.

Sample Base Weight Breakdown

Category	Weight
Shelter	730g
Sleep	900g
Cooking	250g
Pack	740g
Clothing (packed)	610g
Nav + safety	433g
Water (filter + bottle)	140g
Total base weight	~3.8kg

The Rules of Ultralight

Every item earns its place — if it hasn't been used on the last 3 trips, leave it
Multi-use items — a pot is a mug, a buff is a hat, trekking poles are tent poles
Wear your heaviest clothes — boots, trousers, jacket don't count in base weight
Never sacrifice safety for weight — first aid, navigation and emergency shelter are non-negotiable
Lighter is a privilege, not a right — you need experience to know what you can safely leave behind

Key Product Recommendations

Thermarest NeoAir XLite

Amazon UK

£0Premium

The ultralight mat standard. Essential for sub-5kg base weight.

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TOAKS Titanium 750ml

Amazon UK

£0Budget

The only pot most ultralight backpackers need.

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Affiliate link — we may earn a small commission at no extra cost to you

Nitecore NB10000

Amazon UK

£0Mid-Range

The lightest power bank worth carrying.

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Affiliate link — we may earn a small commission at no extra cost to you

The Ultralight Mindset

Ultralight is not about buying expensive gear. It is about ruthlessly evaluating what you carry. Every item must earn its place. Ask three questions: Do I need this? Can something I already carry do this job? Is there a lighter alternative?

The biggest weight savings come from the Big Three: shelter, sleep system, and pack. Get these under 2kg total and your base weight drops dramatically.

Safety Warning

Never sacrifice safety for weight. First aid kit, navigation equipment, emergency shelter, and warm clothing are non-negotiable regardless of your base weight target. Ultralight is a privilege earned through experience, not a shortcut for beginners.

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