The Ultimate Packing List for a Week Long Camping Trip in the Mountains

The forecast said sunny. By the third evening, we'd been through two thunderstorms, a hail squall that sounded like a drummer warming up on the tent fly, and temperatures that dropped about 25 degrees the moment the sun went behind the ridge. My buddy's cheap "all-weather" jacket was soaked through by day two, and he spent the rest of the week wearing my spare fleece layered over a trash bag. I laughed at him, but I was the one who'd forgotten to pack a second pair of trekking socks. That was four years ago, and it's exactly the kind of mistake that shapes how I pack for a week in the mountains now.

Packing for seven days in the backcountry is a different beast than a weekend trip. You can't just "make do" with a slightly damp sleeping bag on night three. You can't borrow a warmer layer from a friend. Every item you carry has to earn its place on your back, and the margin for error shrinks with every mile you put between yourself and the trailhead. Here's what I've learned after dozens of week-long trips in the Rockies and the Sierras, including the mistakes that cost me sleep, comfort, and once, a truly regrettable case of trench foot.

The Weight and Volume Budget: Your Packing List Starts Here

Before you even think about what to bring, you need a budget. Not a money budget—a weight budget. On a week-long trip, every ounce multiplies over the miles. I've carried packs that felt fine in my living room and miserable by mile six. The difference never came down to gear quality; it came down to what I chose to leave behind.

My rule of thumb is simple: for a week in the mountains, base weight (everything except food, water, and fuel) should come in under 20 pounds if you're going ultralight, or 25-30 pounds if you're carrying a more comfortable, traditional kit. That's not a hard number from a study—it's the number that lets me cover 8-10 miles a day without feeling destroyed by the third day.

Shelter and Sleeping System: The Non-Negotiables

Your tent, sleeping bag, and pad are your home for seven nights. I don't compromise on these. Here's what I've settled on after testing alternatives that failed:

• Tent: A 2-person freestanding tent for solo use, or a 3-person for two people plus gear. Freestanding matters more in the mountains than people think—you can pitch it on rock slabs where stakes won't hold. I use one that weighs 3.5 pounds; my partner and I split it, and it's survived winds that flattened my old non-freestanding tarp shelter.
• Sleeping bag: Rated for 20°F, not 30°F. Ratings are survival ratings, not comfort ratings. A 30°F bag will keep you alive at 30°F, but you won't sleep. I learned that on a 40°F night in the Wind Rivers where I shivered until 4 AM. My 20°F down bag weighs 2.5 pounds and costs more, but it's worth every gram.
• Sleeping pad: An insulated pad with an R-value of at least 4. A bare ground or thin foam pad will suck the warmth out of you even in a good bag. I use an inflatable pad that packs down to the size of a water bottle but keeps my hips off the cold ground.
• Pillow: The inflatable kind, or a stuff sack with your puffy jacket inside. I've tried the "clothes in a sack" method and it works, but after six nights your jacket is a greasy mess. A 3-ounce inflatable pillow is a luxury I now happily pay for.

The worst mistake I made here? Buying a tent that was "big enough" but didn't have a decent vestibule. On a rainy week, all my gear got soaked every time I entered or exited. A covered vestibule for your pack and boots is not optional. It's a dry-hanging area and a mudroom in one.

Layering for Seven Days of Mountain Weather

Mountains create their own weather, and it's not polite. A week in the high country means you'll likely see sun, wind, rain, and possibly snow—sometimes all in the same afternoon. The solution is a modular layering system, not a single "weatherproof" jacket.

I plan for a 30°F temperature swing between daytime highs and nighttime lows. If it's 60°F during the day, I'm prepared for 30°F at night. That means carrying more than you'd think for a summer trip. The system that has never failed me:

• Base layer: A lightweight merino wool or synthetic long-sleeve shirt. Worn daily under your hiking shirt. It manages sweat and stops you from freezing when you stop for lunch. One for hiking, one for sleeping.
• Mid layer: A fleece or lightweight puffy jacket. Fleece for active use, puffy for camp. I carry both on a week trip—a 6-ounce fleece and a 10-ounce puffy. Together they're warmer than a heavy parka and far more flexible.
• Shell: A waterproof/breathable jacket with a hood. This is the item you don't skimp on. My partner's 30-dollar poncho shredded in a windstorm on the Continental Divide; my 200-dollar jacket from a reputable brand has tears now, but it held together. Buy the best shell you can afford.
• Rain pants: Not fun to wear, but non-negotiable in a downpour. Half of heat loss happens through your legs. A 5-ounce pair of waterproof pants saves you from hypothermia when the trail becomes a river.

What is the 3-3-3 rule for camping?

The 3-3-3 rule for camping and RV travel is a pacing guideline designed to reduce fatigue, avoid setting up in the dark, and make trips more relaxing. It has three parts: drive no more than 300 miles per travel day, arrive at your next campsite by 3:00 PM, and stay a minimum of three nights at each location. The idea, which is popular in the RV community, is that you keep travel days short, give yourself plenty of daylight to set up camp, and actually settle in rather than constantly packing and moving. For a week-long trip, this translates to fewer, deeper stops instead of a new campsite every night—which also means less repacking your gear and more time to enjoy the mountains.

For backpacking specifically, the principle is the same: don't plan to break camp and hike 15 miles every single day. Build in a rest day or a zero day where you camp twice in the same spot. Your body—and your gear—will thank you.

Food and Water for a Full Week

Food is where week-long trips go to die. On a weekend, you can get away with eating poorly. On day five, if you haven't eaten enough calories, your energy crashes, your mood sours, and hypothermia risk climbs because your body can't generate heat.

Here's what I've calculated from real trips: I need about 2,500-3,000 calories per day, and that means roughly 1.5 to 2 pounds of food per day. For a week, that's 10-14 pounds of food. That's heavy, which is why dehydrated and calorie-dense foods dominate my meal plan.

• Breakfast: Instant oatmeal with added dry milk, or a protein shake mix. Both just need hot water. On my last trip, I had the same oatmeal every morning for seven days and didn't get tired of it, which surprised me.
• Lunch: Tortillas with peanut butter, hard cheese, and shelf-stable sausage. No cooking required, high fuel density. Eat on the trail.
• Dinner: Freeze-dried meals are the standard for a reason—they weigh about 5 ounces each, they're easy, and after a 10-mile day you won't care about gourmet. But they're expensive. A cheaper alternative: instant mashed potatoes, dehydrated vegetables, and a packet of salmon or chicken. Boil water, mix, eat.
• Snacks: Nuts, trail mix, energy bars, chocolate. I budget about 500 calories of snacks per day. On my first long trip, I forgot to pack enough snacks and was ravenous by day three. It made the miles feel twice as long.

Food Storage and Bear Safety: The Part Everyone Forgets

A week of food in the backcountry means a lot of smell, and smells attract animals. In bear country, you absolutely need a bear canister or an approved hang setup. In the Sierras, canisters are required—no exceptions. They're bulky and heavy (about 2.5 pounds), but they're also a chair, a table, and a pillow in camp.

Beyond bears, the bigger issue is food storage in your pack. Never store food in your tent. Never sleep with it. It's not just about bears—mice and squirrels will chew through your pack for a single granola bar wrapper. I learned that the hard way when a pine marten shredded my shoulder strap to get at a pack of almonds.

The Safety and Emergency Kit: Non-Negotiable for High Altitude

Navigation and first aid are where you separate a prepared hiker from someone who's just optimistic. Most search and rescue callouts in the mountains involve someone who was "just going for a day hike" without a map, a headlamp, or a way to call for help. A week-long trip amplifies every risk—you're farther from the trailhead, and your margin for error is thinner.

My personal kit, refined after a few scares:

• Navigation: A physical map and a compass, plus a GPS device or a phone with downloaded offline maps. I carry both. I've had my phone battery die at 20% on day two because I forgot to put it in airplane mode in a no-service zone.
• First aid: A kit tailored to altitude: blister supplies (moleskin, leukotape), pain relievers, anti-diarrheal pills, and antiseptic wipes. I also carry a few doses of ibuprofen which helps with headache at elevation—though it's not a cure for altitude sickness.
• Altitude sickness protocol: If you get a persistent headache, nausea, or dizziness above 8,000 feet, descend. That's not a joke; it's the only reliable treatment. I've turned around at 12,000 feet after my partner started vomiting and slurring words. It was a bad headache that we treated by losing 2,000 feet of elevation in an hour.
• Emergency communication: A satellite communicator or personal locator beacon (PLB) is worth the weight on a solo or remote trip. They're about 4 ounces. I used to think they were overkill, then I was on a trip where a hiker had a compound fracture two ridges away. The rescue was quick because of a satellite communicator. Now I don't leave without mine.
• Headlamp: A good one with a spare battery. On a week trip, one battery won't cut it if you hike any early mornings or late evenings. I carry a second set of batteries and a tiny backup light that weighs half an ounce.

The Most Forgotten Items (and How to Avoid Forgetting Them)

After years of camping, I've compiled a list of what people actually forget. It's rarely the big ticket items. It's the small, face-palm-inducing things that turn a great trip into a misery.

Here's what I've forgotten at least once, and what I've seen friends forget:

• Socks. Not just one pair, but enough for the week. I carry three pairs for seven days, washing one in a stream each night. If you forget your only spare, you're in trouble by day two.
• Water purification backup. My main filter is a gravity system. In my emergency kit, I carry a small bottle of water purification tablets. They weigh nothing and they save you if your filter clogs or freezes. I once had a filter clog with silt on day three of a five-day trip—the tablets saved the trip.
• Sunscreen and lip balm with SPF. Altitude burns faster than sea level. I've seen people get sunburned noses through clouds. The sun is stronger up there.
• Earplugs. Wind, snoring campmates, or a stream that's louder than you expected. Earplugs are the difference between a good night's sleep and a miserable one.
• A small repair kit. Duct tape wrapped around a pencil, a needle and thread, a few zip ties. This has fixed everything from a broken trekking pole to a hole in my tent fly. Cost: 2 ounces. Value: incalculable.

The best packing method I've found is laying everything out on the floor before putting it in your pack. Item by item. If you're not sure you'll use it, challenge yourself—do I need it, or is it a "what if" item? The 3-3-3 rule applies here too: if you've been thinking about packing it for three days, and you haven't used it in three trips, leave it home. That's my own modification, and it's saved me about 5 pounds of pack weight over the years.

Final Thoughts on Packing for the Mountains

A week in the mountains is a negotiation with the weather, the distance, and your own body. The gear you pack is the tool kit you use to stay on the right side of that negotiation. The truth is, there's no perfect list—everyone's kit evolves with every trip they take. What works for me after a decade of testing might not work for you on your first outing, and that's fine. The goal is to start smarter than I did, with a list that keeps you dry, warm, fed, and safe enough to enjoy the view from the top.

And when you get home, and you're unpacking your gear, you'll probably find one or two things you never touched. That's not a failure; that's your next trip's saving grace—the lesson is learning which items were worth the weight after all.