PCT Planning · Resupply

How to mail a PCT resupply box so it doesn't come back

Whether to mail boxes is the question everyone argues about. How to address, mark and ship them is the question that actually loses food — and it gets about two sentences of coverage anywhere else. This is the part that happens with a marker in your hand.

A returned box is not a small problem. It goes back to an address you left five months ago, the food inside is a write-off, and you find out at a counter in a place with one store. Almost all of it comes from four or five avoidable mistakes.

First, know which kind of place you're mailing to

Every decision below forks on this, and it's the distinction most guides skip.

The shipping-carrier point is where boxes die. Of the 68 private holders we track along the trail, eight won't take USPS at all — they're off the postal route, or the mail comes to a box number rather than the building, so UPS or FedEx is the only way in. Send those a USPS parcel and it has nowhere to land. A handful of others ask specifically for Priority Mail and nothing else.

There is no way to guess this from a map. Check what the destination accepts before you buy postage, not after.

Why some places charge and some don't

It looks arbitrary until you think about what you're asking for. A business is storing a fifteen-pound box for several weeks, in a back room that isn't large, alongside dozens of identical ones, and taking on the job of finding yours when you walk in.

Free holds are almost always places that make money from you some other way — the store you'll buy four days of food from, the hostel you'll sleep in, the lodge with the restaurant. The hold is what gets you through the door. Fees show up where that logic breaks: remote outposts where the volume is enormous relative to the space, places that have had to dedicate real storage to hiker boxes, and stops where freight has to come up a mountain road before it reaches you. At the far end, a few remote resorts charge a prepaid package fee that covers storage and the cost of getting anything there at all.

The address block

Two formats, and they are not interchangeable.

To a post office, the address is your legal name, the words General Delivery, and the town. Nothing else goes in the address block. Write GENERAL DELIVERY in capitals and spelled out — USPS addressing standards call for it uppercase with no abbreviation, and it has to sit on the line directly above the city, state and ZIP, because that is the line a sorter reads as the delivery address. The hold note goes above your name, not between your name and the address.

To a business, you are a guest in someone else's mail. Same shape: the hold note and date first, then your name, then c/o and the business name, then their street address exactly as they give it.

Three details that matter more than they look:

• Use your legal name, not your trail name. A box addressed to Sundog is a box nobody can hand over, because the ID in your pocket says something else. If you want your trail name on there, put it in brackets after your real one.
• Put your estimated arrival date on the box. It's not for you, it's for whoever is deciding whether a box from April is still worth keeping in September.
• Write the address, don't only print it. A printed label can peel, smear or get scuffed off in a truck. The same information in permanent marker underneath costs you thirty seconds.

Should your phone number be on the box?

You'll see experienced hikers insist on adding a phone number or email to the label. They're right, and they're right about half the time — the answer depends on which of the two destinations you're mailing to, which is why a blanket rule doesn't work.

To a business: yes. A private holder has no tracking system and no obligation to you. If your box arrives crushed, if it turns up under a different name, if you're three weeks late, a phone number or email is the only way they can do anything other than shrug. Several holders ask for it outright.

To a post office: no. Nobody at a post office is going to call you. General Delivery is a sorting rule, not a service with a customer record, and extra lines crowding the address block only give an automated sorter more to misread. Use the space for the hold note and the date instead.

There's a second reason to be deliberate about it. A box on an open shelf in a general store displays whatever is written on it to every person who walks past, for weeks. If putting a mobile number in public view bothers you — and for solo hikers it reasonably might — use an email address instead. It does the same job.

Mark the sides, not the top

Picture where your box actually spends its time. Not on a shelf facing out — in a column, stacked six deep, with the label pressed against the box above it or flat against a wall. The person looking for it is reading spines, not covers.

So put your last name in large letters on all four sides, not just beside the label. Then give the box one distinctive visual marker: a band of bright coloured tape, a thick stripe, a shape you draw the same way every time. You're not being decorative — you're giving someone a way to find your box without dismantling the stack, and giving yourself a way to spot it across a room.

Two things to avoid. Don't choose a marker everyone else chooses — a red heart or a smiley face stops being distinctive around the fifth one. And don't run tape across the shipping label; a scanner that can't read it is a box that stops moving.

Priority Mail or Ground Advantage?

A common shortcut is "Priority is cheaper." That's not quite it. Priority Flat Rate is cheaper for the boxes hikers actually send — dense, heavy food going a long way — because the price ignores weight. Ground Advantage is priced by weight and distance, so it wins on light boxes going a short way and loses badly on a fifteen-pound box crossing the country.

But cost isn't the deciding factor. This is:

The practical rule: Priority Flat Rate for the boxes that matter, Ground Advantage for cheap top-ups near home where you'd shrug at losing it. Weigh a box before you commit to a flat-rate size; the shipper's own calculator will tell you which way it falls.

Boxes, or a bucket?

Some holders ask for a five-gallon bucket with a screw-on or snap lid instead of cardboard, and it's worth knowing why rather than treating it as a quirk.

Cardboard has a bad time in the places these boxes are stored — sheds, porches, outbuildings, barns. Mice and squirrels go through it in a night, damp collapses it, and a box at the bottom of a stack gets crushed. A sealed bucket is rodent-resistant, waterproof, stackable without crushing, and can be shoved outside when the room fills up. For a holder storing a hundred parcels through the season, that is the difference between a manageable pile and a problem.

The costs are real: a bucket is heavier, awkwardly shaped, can't go flat rate, and ships as an oversized parcel. Most hikers use one only where the holder asks for it, or for a bounce box they'll keep re-sending up the trail, where the reusability pays for itself. If you do send one, tape the label flat to the side and write the address on the bucket in marker as well — labels don't like curved plastic.

Can you mail stove fuel?

Short answer: don't. Longer answer worth knowing, because the internet gives both a flat "it's illegal" and a confident "sure, I do it every time," and neither is accurate.

Gas canisters are a flammable gas, and USPS does permit them domestically as a limited quantity by ground transportation only, within strict size limits and with specific hazard packaging and markings. So it is legal, conditionally. In practice it's a bad plan: it cannot travel by air, so it can't go by any service that might fly; it needs marking most people get wrong; and plenty of retail counters will decline it on sight regardless of what the rule book says. Alcohol fuels such as denatured alcohol or HEET sit under the same kind of restriction as a flammable liquid.

The thing that makes all of this unnecessary: fuel is one of the few items reliably sold along the trail. Outfitters and trail-town stores stock canisters precisely because nobody can fly or mail them easily, and the same is true at the start — you cannot bring a canister on a plane, so the first one gets bought after you land. Plan fuel as an in-person purchase and the problem disappears.

Picking it up

Bring ID. A post office can require suitable identification before handing over General Delivery mail, and many private holders ask as well. This is the real reason the name on the box should match the name on your licence or passport.

Other things worth knowing at the counter:

• The clock is 30 days on General Delivery, and the sender can specify shorter. Treat two weeks as the safe window — a box sitting past its welcome can go back or into the dead parcel system before the theoretical deadline.
• Unless it's 15 days. This is the trap. If the sender selects Hold For Pickup — a specific USPS service where a parcel is addressed to a named post office for collection — the retention period is 15 calendar days, not 30, after which it is returned automatically. It looks like the right option when you're standing at the counter trying to explain a thru-hike, and it quietly halves your margin. Address it to General Delivery instead.
• Check the hours before you plan the day. Small-town post offices keep short hours, close for lunch, and are shut on Sundays and federal holidays. More hikers lose a day to a closed counter than to a lost box.
• Open it before you leave. If something is missing, crushed or melted, you want to know while you're still standing somewhere that can help.

If your plans change

They will. The graceful version: if you're skipping a stop and the box is Priority and unopened, ask for it to be forwarded to the next place you'll be, and put the new hold date on the request. If it's at a business, call them — this is exactly what that phone number on the label was for.

The ungraceful version is a box nobody hears about, occupying space for a month, and eventually going home. Either outcome starts with the same thing: knowing which stop you'll actually reach and roughly when.