Resupply Strategy: How to Feed a Thru-Hike

No one carries months of food. A thru-hike works because you walk from one resupply point to the next, refilling your food bag every few days in towns along the route. Get your resupply strategy right and you will eat well, carry light, and rarely think about food logistics. Get it wrong and you will haul a week of groceries up a mountain or arrive in town hungry and out of options.

The Two Ways to Resupply

There are two basic methods, and most hikers use a blend of both.

Buy as you go. You walk into a town, find a grocery or general store, and buy what you need for the next stretch. This is simple and flexible — you eat what sounds good that week and adjust to your real appetite. The catch is that small trail towns sometimes have only a gas station with thin, expensive pickings.

Mail drops. You pack boxes of food in advance and mail them to yourself at post offices or businesses along the trail. This guarantees you get the food you want, which matters for special diets or remote stretches with no real store. The downside is cost, effort, and being locked into choices you made months ago, back when trail food still sounded appealing.

Plan Around the Gaps

The core of a resupply strategy is knowing the distance between reliable resupply points and carrying exactly enough to cross each gap. Sit down with your maps and a data book or trail app, and list every town, its store quality, and the miles between them.

Most gaps are three to five days. A few remote stretches may force a carry of a week or more — those are the sections to plan carefully, and sometimes the only places a mail drop truly earns its weight. Knowing your longest carry tells you how much food capacity your pack really needs.

Hit Your Calories

Walking all day burns far more than most people expect — often far more than you can comfortably eat. The goal on trail is calorie density: the most energy for the least weight and bulk. Aim for food that delivers around 120 calories or more per ounce.

That means leaning on fats and simple carbs: nut butters, olive oil, crackers, cheese, dense bars, dried fruit, candy, and instant sides. Fresh produce and canned goods are heavy and watery — save those for the meal you eat in town. Pack what you will actually crave and eat, because the lightest food is useless if it stays in your bag.

Do Not Forget Town Food

Part of any resupply strategy is the town meal itself. Your body is running a calorie deficit no trail food can fully cover, so the big restaurant meal on resupply day is not a guilty pleasure — it is fuel. Many hikers plan their days specifically to arrive in town hungry, eat enormously, sleep in a real bed, and walk out the next morning restocked in both pack and body.

Repackage Before You Go

Trail food arrives wrapped in cardboard, air, and marketing, almost none of which you need to haul up a mountain. Before each stretch, strip packaging down to the essentials: dump boxed sides into a zip bag, combine meals, and tear the cooking instructions off the label if you want to keep them. Repackaging saves surprising weight and bulk, makes your food bag pack down small, and lets you see at a glance exactly how many days of eating you are carrying. It also turns a chaotic resupply into a quick sorting job right there on the store floor.

Keep It Simple

New hikers often over-engineer resupply, spreadsheeting every meal for a whole trail. In practice, most settle into buying as they go, mailing a box only to the few towns that need one. Plan the hard gaps carefully, stay flexible everywhere else, and let your appetite — which changes more than you expect out there — guide the rest.