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Shopping, Groceries, and Supplies on a US Road Trip

Shopping, Groceries, and Supplies on a US Road Trip

For international travellers, shopping in the United States can feel familiar on the surface but works very differently in practice. Portions are larger, distances between towns can be long, and many services are designed around driving rather than walking. If you are used to European campervan travel, you will notice different store types, packaging sizes, opening hours, and expectations around self-sufficiency.

Knowing where and when to shop is essential for avoiding long detours, wasted food, or running out of key supplies between destinations. This is especially important in remote areas, national parks, and desert regions where shops may be scarce or seasonal. Understanding US measurements, fuel and water access, and campground facilities will help you plan efficiently and travel with confidence from your first day on the road.

Where to Buy Groceries in the USA

Supermarkets

Large supermarkets are the main place to buy food. Major chains are widespread, but opening hours can vary by state, city, and holiday period.

Stores are generally larger than typical European supermarkets.
Product sizes are bigger, which can be challenging in smaller campervans.
Fresh bread is available, but baked goods often differ from European styles.

When starting your trip, it is usually easiest to shop near major pickup locations such as Los Angeles or Denver, where store choice and opening hours are more predictable.

Discount and Bulk Stores

Discount stores sell very large pack sizes at lower unit prices. These can be useful for long trips or larger groups but may not suit short rentals or small RVs.

Bulk quantities can exceed European storage expectations.
Refrigerated and freezer space in RVs is limited.

Convenience Stores and Gas Stations

These are common along highways and in small towns and sell snacks, drinks, ice, and basic essentials.

Prices are usually higher than in supermarkets.
Fresh food options and healthy choices are limited.

Understanding US Measurements

The United States does not use the metric system, and labels and appliances follow US standards.

Distances are in miles (1 mile is approximately 1.6 kilometres).
Fuel is sold in gallons (1 US gallon is approximately 3.8 litres).
Food weights are shown in ounces and pounds.

Kitchen appliances in RVs are sized for US measurements, so buying cookware locally is usually easier than bringing items from Europe.

Water, Gas, and Waste Supplies

Essential RV Consumables

You will regularly need:

Fresh water from approved potable sources only.
Propane gas for cooking, hot water, and sometimes heating.
Access to a dump station for emptying wastewater.

Potable (drinkable) water taps are clearly labelled. Never fill your fresh water tank from unmarked or non-potable sources. Propane refilling rules and availability vary by state and location, and not all fuel stations can refill RV propane tanks.

A dump station is a designated facility for emptying grey water (from sinks and showers) and black water (from the toilet). Many campgrounds and some fuel stations provide them, sometimes for a small fee, but availability is not guaranteed.

Dumping wastewater outside approved facilities is illegal and can result in fines.

To understand how RV systems work and what utilities may be included, see the utilities FAQ.

Campground Hookups Explained

Full hookups: water, electricity, and sewer at your campsite.
Partial hookups: usually water and electricity only.
No hookups: often called boondocking, meaning no onsite services are provided.

Boondocking requires careful planning for water, power, and waste capacity, as shops and facilities may be far away.

Shopping Frequency and Route Planning

Unlike many parts of Europe, you cannot assume daily shopping opportunities, especially outside urban areas.

Plan major grocery stops every few days.
Stock up before entering national parks or remote regions.
Check opening hours, especially on public holidays, when some stores may close or reduce hours.

Payments and Practical Tips

Credit and debit cards are widely accepted, but card terminals may ask for a ZIP code for verification. International cards usually work by selecting “credit”.
Tipping is not required in supermarkets or for self-service purchases.
Plastic bags may cost extra or be banned in some states or cities.

Final Tip Before You Go

Before starting your route, consider your RV size, fridge capacity, and camping style. A little planning around RV groceries, dump stations, and supply stops in the USA makes long drives and remote stays far more enjoyable.

When you are ready, check current RV availability and pickup options across the USA on USARVRentals.com.

Shopping, Groceries, and Supplies on a US Road Trip