Packing Lists: Complete Guide
Comprehensive technical analysis of sizing, materials, installation requirements, and manufacturer standards for packing lists.
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In plain English
A packing list is simply a checklist you run through before you leave home. Its job is to make sure you bring what keeps you safe and comfortable, and leave behind the stuff you will never touch. Think of it like a grocery list for a trip: you write it once, then reuse and tweak it every time.
The list grows with the length of the trip. A short walk in the woods needs water, snacks, a map, a spare warm layer, a small first-aid kit and a light. Staying out overnight adds a place to sleep, something warm to sleep in, a way to cook, and more food.
The "ten essentials" are ten types of gear, such as a way to find your route, a way to stay warm and a way to make light. They are there for the afternoon that goes wrong: a twisted ankle, a sudden storm, or a hike that runs past sunset. Carry all ten, even on short walks.
A packing list ties gear to trip type so nothing essential is forgotten and nothing dead-weight is carried. A day hike and a five-night section hike share the same core kit — navigation, water, food, and a hiking backpack sized to the load — but they diverge fast on shelter, cooking gear, and clothing volume. Building the list by trip length first, then checking it against the ten essentials, keeps the pack honest: heavy enough to handle a bad afternoon, light enough that the miles don't hurt. The sections below cover the day-hike list, the overnight list, the ten essentials, and how to trim the pile once everything is laid out on the floor.
A day-hike packing list covers water, food, navigation, sun protection, one extra layer, a first-aid kit, and a light repair kit, all carried in a daypack under 25 liters. Nothing on the list needs an overnight rating; the job is covering a few unplanned hours, not an unplanned night.
The core items, in the order most hikers pack them:
- Water: 1.5–3 liters, or a reservoir plus a treatment option on routes without a reliable water source
- Food: trail snacks, plus one packed meal for hikes running past four hours
- Navigation: a paper map and compass, or a phone with an offline map downloaded before the trailhead
- Sun protection: sunglasses, sunscreen, and a brimmed hat
- Extra layer: a packable rain shell or light insulated jacket, even on a clear-forecast summer day
- First-aid kit: blister care, gauze, tape, pain reliever, and any personal medication
- Repair kit: a small knife or multi-tool and a few feet of repair tape
- Illumination: a compact headlamp, even on a hike planned to finish well before dark
An overnight packing list adds a shelter, a sleep system, a cook setup, and a full day's food to the day-hike core, which typically pushes pack capacity into the 35–55 liter range depending on season and food volume. Everything roughly doubles except navigation and first aid, which stay close to the day-hike list.
| Category | Day hike | Overnight |
|---|---|---|
| Shelter | None | Tent, tarp, or bivy, plus stakes |
| Sleep system | None | Sleeping bag or quilt, plus a pad |
| Cooking | None | Stove, fuel, pot, and a spork |
| Food | Snacks plus one meal | Breakfast, lunch, dinner, and snacks per day out |
| Water | 1.5–3 liters | 2–4 liters of carry capacity plus a treatment method |
| Clothing | One extra layer | A full layer change plus dedicated sleep clothes |
| Typical pack size | Under 25 liters | 35–55 liters |
Loading order matters as much as the list itself: heavy items ride close to the back and centered between the shoulder blades, a detail covered in packing load order. A well-fitted hipbelt carries most of that added weight, which is why torso and hip measurements matter more on an overnight pack than on a daypack; see measuring your torso and hips for the method.
The ten essentials are ten gear categories, not ten specific items, built to cover an unplanned night or a minor emergency: navigation, sun protection, insulation, illumination, first-aid supplies, fire, repair kit and tools, nutrition, hydration, and emergency shelter. This systems-based version of the list is widely used in US trail-safety guidance.
These ten categories apply to a two-hour day hike and a two-week trip alike. The item inside each category scales with trip length and season; the category itself never gets skipped.
Trimming a packing list means weighing every item, cutting genuine duplicates, and checking the running total against a base-weight target, rather than removing entire categories. The ten essentials stay in the pack; the cut comes from redundant clothing, oversized food margins, and heavy gear that has a lighter equivalent.
A simple trimming process:
This process pairs naturally with the sub-hub's other guides: seasonal-guides for swapping insulation and shelter by month, and trip-length-capacity for matching pack volume to nights out before buying a bigger bag than the trip needs.
Go Deeper
Detailed companion guides for packing lists.
The Complete Hiking Backpack Packing List
A full hiking backpack packing list by category, from day-hike essentials to overnight gear, with weight guidance and trimming tips for every trip length.
Seasonal & Conditions Guides
Related trails & trip guides guide.
Thru-Hike Pack Guides
Related trails & trip guides guide.
Where the ten essentials come from, and what the evidence covers
The National Park Service describes the ten essentials as items that help with minor injuries, sudden weather changes or unexpected emergencies, which is why the list stays the same for a two-hour walk and a two-week trip.1 The NPS adds a few specifics worth building into any list: start from a pre-made first-aid kit and adapt it to the trip and your own medical needs, prefer a headlamp over a handheld light because it leaves your hands free, and wear or carry bright clothing so search and rescue can spot you.1
This page credits the Mountaineers with popularizing the category-based version. That history is widely repeated, but no readable primary source for the origin story is in our verified library, so treat it as background rather than established fact. What is well documented is how the list is used today by US land agencies such as the NPS.
One item on the list is not gear at all. The NPS says to tell someone where you are going and when you expect to be back, and its Hike Smart guidance asks for a trip plan with your route, timing and companions left with a trusted person who is not on the trip.1,2 It also warns against relying on a cell phone for emergencies and suggests considering a personal locator beacon.2
How much water to pack, and what it weighs
The 1.5 to 3 liter day-hike range on this page is a planning guide, not an official figure; no agency in our library sets one daily number for hikers. The CDC Yellow Book says sweat rates can reach about one liter an hour and advises drinking to thirst, warning that forcing water when you are not thirsty raises the risk of hyponatremia, a dangerous drop in blood sodium that affects recreational hikers too.3 The NPS, by contrast, tells active hikers in hot weather to drink often and before they feel thirsty.1 Both are official guidance for different situations, so hot, long days call for more margin.
Weight adds up fast. One liter of water has a mass of about one kilogram, roughly 2.2 pounds.4 In desert parks the numbers climb: Guadalupe Mountains National Park asks backpackers to carry a gallon per person per day and notes that a gallon weighs about 8 pounds.5
A treatment method is part of the hydration category because clear streams can still carry germs.6 The CDC notes that most portable filters remove parasites but not viruses or bacteria, so check what your filter is rated for before counting on it.6
Sizing the pack to the list, and trimming honestly
Capacity advice differs between sources. This page suggests under 25 liters for a day hike and 35 to 55 liters overnight. The Washington Trails Association suggests 25 to 30 liters for a full-day hike and 45 to 50 liters for a standard one- or two-night trip.7 Bulky items like a winter jacket or a bear canister push you toward the top of either range, so lay the list out before choosing a pack.
When trimming, it helps to use the standard definition of base weight: all your gear minus consumables such as food, water and fuel.8 The Appalachian Trail Conservancy calls the pack, shelter and sleeping bag the "big three" because they are usually the heaviest items, so that is where swaps save the most.8 This page also removes worn clothing from base weight; many hikers do, but the definitions from the ATC, Gossamer Gear and Zpacks mention only consumables, so say which method you use when comparing numbers.9,10 Gossamer Gear labels a base weight under 20 pounds lightweight and under 10 pounds ultralight.9