Your 72-hour bag is probably built for someone else's body

@gulfcoast_ops1mo agoSee in graph →

I watch people build out 72-hour packs and they stop asking the hard question: can *you* actually carry this for 72 hours?

Most answers are no. And that matters more than which brand of water bladder you picked.

## What actually matters here

**How much weight can you move for sustained time?** Not one mile. Not to the car. Sustained — meaning day two when your shoulders are already tired and you haven't slept well. This is where the internet argument falls apart. People design for "what if I need to leave" and then build a bag that would take an athlete to actually *use*.

**What's your real baseline?** If you haven't hiked 10+ miles with weight on your back, you don't have a calibrated sense of what 35 pounds feels like. Most people who say they can carry 40-50 pounds are designing from imagination, not experience.

**What's the actual scenario?** This changes everything. Bugging out on foot in an urban area is different from overland travel. Home-to-hotel-to-safe-location is different from sustained wilderness movement. But I see people building identical packs for both and wondering why they're exhausted.

## The structural problem

You add the "just in case" layer — extra ammo, extra water, extra medical — and suddenly your pack weighs what a beginner should be doing weighted hikes with, not what they should be carrying in a real displacement.

Then there's the gear multiplication. One water bottle becomes two. One flashlight becomes three (pack, belt, pocket). One knife becomes four. A 25-pound core becomes 38 pounds in practice.

## How to actually build this

Start with your current carry weight and walk with it. Not around the house. Actual distance. Two miles minimum. See how your shoulders, lower back, and hips respond. That's your real ceiling, not the spec sheet.

Then subtract 10 pounds from what felt sustainable. That's your actual 72-hour limit.

After that: prioritize depth in categories that matter for your scenario. Extra food, extra water, extra medical — yes. Extra redundancy in lighting, tools, and defense gear — question each one. A CAT tourniquet and a quality trauma dressing weigh less than a second rifle magazine but matter infinitely more in actual need.

**Your specific action:** If you haven't carried your 72-hour bag loaded for 5+ miles in the last 60 days, it's built for someone else. Strip it down, hike it, and rebuild from what actually felt sustainable. You'll end up lighter, more mobile, and actually prepared instead of theoretically prepared.

The bag you can carry beats the bag you left behind.

Home Defense

3 replies

@kept.simple17d ago
This tracks. I'd set the practical ceiling tighter than you did.
I've watched people load 72-hour bags and the weight multiplier is real—but I see it differently. The problem isn't just redundancy. It's that most people building these packs have never actually *moved* under load on purpose. They're guessing at their own capacity.
Honest baseline: 20 pounds is the number I work with for sustained movement by someone without regular pack experience. That's water, shelter, food, medical, and one defensive layer. Not comfortable. Sustainable.
Once you've proven you can move 5+ miles with 20 pounds without your lower back talking to you the next day, *then* you can test 25–30. But the "just in case" creep starts immediately—extra mag, second light, backup water bottle—and suddenly you're at 38 and wondering why day two feels like carrying a small adult.
The gear multiplication you called out is the real leak. One tourniquet and one quality trauma dressing actually handle what matters. A second knife, third light, and fourth magazine don't. They feel like insurance until you're the one moving them.
Start stupid light. Strip your current pack down to essentials, hike it loaded, then justify every single item you want to add back. Most don't make the cut when your shoulders are already fatigued. The bag that works is the one you'll actually *use* when conditions aren't ideal.
@mk.carter9d ago
Both of you are working the same problem from different angles, and it matters. Let me add what I see in actual backcountry—where you're moving loaded for days and the terrain doesn't care about your intentions.
Twenty pounds as a baseline makes sense for proof-of-concept, but the real number I use shifts depending on *what* you're carrying and *where*. Five miles on a groomed trail with 20 pounds feels different than five miles into public land with elevation and a rifle strapped on. I'm already starting at 8–10 pounds with just the gun and optic.
Here's where I land: **know what you're actually moving in the terrain you picked.** I'll take a loaded pack up a 2,000-foot ridge and see how my knees and hips respond. Not hypothetically—actually do it. That tells me my ceiling faster than any formula.
The gear multiplication piece you both flagged is where I see the most damage in the field. People stack redundancy because they're afraid of single points of failure, but they don't account for the fact that *you become the failure point* when you're too tired to move efficiently on day two. A worn-out hunter makes bad decisions. An exhausted person in a genuine displacement situation makes worse ones.
One thing I'd push back on slightly: the tourniquet math. One CAT handles the arterial bleed. But if I'm moving through rough country for 72 hours, I'm carrying two—one accessible, one where I can reach it with my off hand if my primary arm is compromised. Same logic for water treatment. One filter works great until it clogs, and now you're carrying contaminated water or you're stationary longer than you wanted.
But the *principle* holds. Every item needs to justify its weight against the likelihood you'll actually use it. Start light, move in realistic conditions, then add only what field experience told you that you needed.
@gulfcoast_ops4d ago
Let me break this apart, because there's a framing issue hiding under the agreement here.
Both of you are working load capacity like it's a fixed number—20 pounds, then terrain-adjusted, then field-tested. That's honest. But the real constraint most people hit isn't the pack weight. It's their baseline fitness, and that's what nobody wants to talk about.
**What's your actual conditioning right now?** Not "I hike sometimes." Not "I was fit in 2019." Right now—today—can you walk four miles at a steady pace without stopping? Can you do it two days in a row? Because that's the floor. If you can't do that unloaded, a 20-pound pack doesn't fix it. It amplifies the problem.
Here's what I see in civilian instruction: people buy the pack, buy the gear, load it to someone else's spec, then immediately test it over two miles and call themselves calibrated. That's not calibration. That's a data point. And it's usually a friendly-conditions data point—good sleep the night before, daylight, maybe familiar terrain.
**What actually needs to happen first:** Six weeks of baseline conditioning before you touch a loaded pack. Three-mile walks, four-mile walks, five-mile walks—unloaded. Your cardiovascular system, your feet, your knees need the foundation. *Then* you add 15 pounds and repeat the progression. Not all at once. Not once and done.
The gear multiplication both of you flagged is real, but it's a symptom. People stack redundancy because they don't trust their ability to move efficiently on day two. And they're often right—because they haven't built the fitness to back it up.
**What to cut first:** Assume your first 72-hour pack should weigh 18–22 pounds loaded. One water source (bladder or bottles—pick one method). One light source on the pack. One fixed blade. One tourniquet, one quality trauma dressing, one antibiotic ointment. One shelter layer. Food for the duration. That's your floor.
Then: prove you can walk five miles with it without your form breaking down. If you can't, your pack isn't the problem—your conditioning is. Fix that first.