What actually goes in your pack for a multi-day trek (and what stays home)
The first time I planned a five-day trek, I laid everything out on the floor and genuinely believed I had it dialled: two of everything, water bottles filled to the brim, and a camp stove I'd never lit in my life. By the end of day two, my shoulders were wrecked, I'd drunk maybe a litre, and I cooked exactly zero meals. The pack weighed 19 kilos. I weighed 71. Something had to change.
Here's what almost no packing list tells you: the hard part isn't knowing what to bring. It's knowing what to cut, and understanding that the right gear depends entirely on the kind of trek you're doing. A hut-to-hut route through the Alps and a self-supported five-day bivouac in the Cairngorms require two genuinely different packs. Same mountain. Different mission.
This guide is built around that distinction, plus the one number nobody seems to publish: how much your pack should actually weigh, and how to get there without sacrificing safety.
Key Takeaways
- Aim for 20% of your body weight — 10–15 kg is a realistic ceiling for most multi-day treks. Heavier works, but you'll feel it by day three.
- Your route decides your kit. Refuges and camping treks share maybe 70% of a packing list, not 100%.
- Water treatment matters more than food. You can skip a meal; you can't skip hydration.
- Emergency satellite communication has moved from "nice to have" to standard practice on remote routes.
- Weigh your pack before you leave home. Every 500 g you cut on day zero pays back across every single day.
- Layer your clothing, don't pack a wardrobe. Three functional layers beat seven single-purpose items.
The essential gear list depends on your route type
Before you buy anything, answer one question: are you sleeping in structures or under fabric?
On a refuge-based trek — the classic Tour du Mont Blanc style itinerary — you're carrying a sleeping bag liner at most, and you eat dinner someone else cooked. Your pack can stay under 9 kg comfortably. On a self-supported bivouac route, you're hauling shelter, stove, food for every day, and a way to treat every drop of water. That's a different animal entirely, and it's where most first-timers overpack and under-plan.
Hut-to-hut versus self-supported: what changes
| Category | Hut-to-hut trek | Self-supported bivouac |
|---|---|---|
| Shelter | Sleeping bag liner only | Tent, stakes, footprint |
| Cooking | None — meals provided | Stove, fuel, pot, utensils |
| Food weight | ~0.5 kg (snacks) | 2–3 kg for five days |
| Water treatment | Optional on serviced routes | Non-negotiable |
| Typical base weight | 6–9 kg | 11–16 kg |
That table is the single most useful thing I can hand you, because it reframes packing as a decision tree instead of a shopping list. The gear you need flows from the trip you've chosen.
Clothing: three layers, not seven outfits
Cotton kills. Not dramatically, and not instantly, but it holds sweat against your skin and chills you the moment you stop moving. I learned this the unglamorous way on a wet Welsh ridge, shivering in a cotton T-shirt while a friend in a merino base layer looked perfectly comfortable. That was a cheap lesson to learn and I've never repeated it.
Your clothing system is three layers, and you wear or carry all of them regardless of forecast.
- Base layer — merino wool or synthetic. Two sets maximum for a five-day trek; you rotate and rinse.
- Mid layer — a fleece or light synthetic jacket that traps warmth while you move.
- Shell layer — a waterproof, breathable jacket with taped seams and a hood that stays up in wind.
Socks deserve a special mention because they're where blisters come from. Wool or synthetic, never cotton. Carry three pairs and change them at lunch if your feet are wet — it sounds fussy until you've walked on hot spots for six hours because you didn't want to stop.
And the small stuff that punches above its weight: a warm hat, thin liner gloves, a buff, sunglasses with proper UV protection. On exposed ridges, temperature swings of 10°C between sun and shade are completely normal.
How much water should you carry on a multi-day trek?
Two litres of capacity is a sensible baseline, but the honest answer is that on multi-day routes you carry less and treat more. Hauling four litres up a climb is brutal, so the smarter play is a filter or purification tablets plus a reliable water source map. On serviced routes in Europe you'll refill most days. In drier regions or on remote ridgelines, plan your refills before you leave camp and never walk past water without topping up.
How many calories do you actually need per day?
Most trekkers burn somewhere in the range of 3,000 to 4,500 calories a day on sustained multi-day routes, and that's the number that matters for food planning. Aim for roughly 100 to 120 calories per 100 grams of food you carry — nuts, dried fruit, oats, chocolate, cheese. The trick isn't eating more, it's carrying calorie-dense food rather than bulky, water-heavy options. On longer treks I resupply at villages or huts every three or four days if the route allows it, which keeps the first two days genuinely light.
Safety gear you should never cut to save weight
I've watched people trim their first aid kit down to two plasters to save 200 grams. It's a false economy, and it's the one category where "lightweight" should never win.
The baseline safety kit for any multi-day trek includes:
- A headlamp with spare batteries (not a phone torch — they die at the worst time)
- Paper map and compass, plus an offline map on your phone as backup
- A proper first aid kit: blister care, painkillers, antihistamines, tape, antiseptic
- Emergency shelter — a bivvy bag or space blanket weighs almost nothing
- Satellite messenger or personal locator beacon for remote routes
- Sun protection: high-SPF cream, lip balm, sunglasses
The satellite communication point has genuinely shifted in recent years. A compact two-way messenger that lets you send an SOS and a "running late" text is now standard kit on serious routes, not an eccentric extra. If you're trekking alone or off-grid, budget the weight for it. No view is worth the alternative.
The pack, and how to load it so your hips do the work
A 60-litre pack is the sweet spot for most multi-day treks. Bigger than that and you'll fill it with things you don't need; smaller and you'll be strapping kit to the outside, which throws off your balance on technical ground.
Loading matters as much as the pack. Weight should sit high and close to your spine, with the heaviest items between your shoulder blades, not down at the base. Tighten the hip belt first — that's where 80% of the load should transfer. Your shoulders steer; your hips carry. When I finally understood that, my day-three misery largely disappeared.
Do the 20% test before you leave the house. Weigh yourself, weigh the pack, and if you're over that threshold on a standard route, something's coming out. In my experience, the thing you drop is almost never the emergency kit — it's the spare trousers you convinced yourself you'd need.
The frequently forgotten items people actually miss
These are the ones I've genuinely seen people regret, in roughly the order of regret severity:
- Extra socks (see above)
- Earplugs for shared huts, which are louder than you expect
- A dry bag for your sleeping bag and electronics
- Toilet trowel and a ziplock bag on routes without facilities
- Blister plasters — the good ones, not the thin ones
- A small repair kit: tenacious tape, a couple of zip ties, spare laces
- Cash in small notes for huts that don't take cards
Notice how few of these are "gear" in the marketing sense. They're the unglamorous items that decide whether day four feels like a holiday or an endurance test.
Should I bring a stove on a hut-to-hut trek?
Usually no. If the huts provide meals, you're carrying dead weight plus fuel. A small stove makes sense only if you're camping some nights or your route has gaps between serviced huts. Check your itinerary night by night before deciding — that single check can save you a kilogram or more.
What's the one thing experienced trekkers cut that beginners should keep?
The spare layer. Beginners often strip the mid layer to save space, then freeze when the weather turns. Experienced trekkers cut volume, not warmth. Keep your insulation; drop the duplicate trousers.
The pack you carry is a set of choices
Every gram in a multi-day trekking pack is a decision you made back at home. The summit doesn't care what brand of jacket you bought. It cares whether you thought about your route type, your weight budget, your water sources, and your worst-case weather. Get those four things right and you'll never need a seventeen-item checklist again.
The next time you stand over a floor full of gear, don't ask "might I need this?" Ask "will I actually use it?" The difference between those two questions is the difference between a trek you remember and a trek your shoulders remember.
