280 Forest Service, 39 BLM, 7 Army Corps and 3 National Park Service. 220 can be booked ahead
Buy for the road you actually want
Idaho splits neatly. A large self-contained truck covers the paved byways and the graveled Owyhee Uplands crossing well, and the BLM says most passenger vehicles manage that byway in summer.
It is the wrong tool for the north. The Forest Service does not recommend motor homes or vehicles towing trailers on the Magruder Road Corridor, advises against RVs on many stretches of the Lolo Motorway, and says the same of large recreational vehicles on the Elk City Wagon Road. Decide which Idaho you are buying for, and ask a dealer which of these roads a vehicle has driven.
Buying a finished vehicle trades money for time. Someone else has already made the thousand decisions, and you can be traveling this season. A dealer who knows these vehicles can also tell you what a used one has been through.
What they offer
01New expedition vehicles, campers and vans
02Used and consignment vehicles
03Trade-ins, financing and delivery
04A proper walk-through of every system
05Service after the sale, or a referral to it
How to buy a finished vehicle
The questions are the same whether it is new or used.
01Ask for weights: empty, loaded, and the gross rating. Overweight expedition vehicles are common.
02Ask for the build documentation: wiring diagrams, component manuals and service history.
03On a used vehicle, have the chassis and the house inspected independently before you buy.
04Ask who services what after the sale, and where.
05Drive it, on dirt if they will let you.
What to have ready before you ask
Know the trip before you choose the truck.
01How many people travel, and for how long
02Where you want to take it, and what you need to park it
03New, used, or either
04A budget range, and whether you have a trade
05When you want to be on the road
Questions people ask
Is it cheaper to buy a finished vehicle or build one?
A used, finished vehicle is often the least expensive way into a capable rig, because builds rarely return what was spent on them. A new custom build costs the most and fits you best. Building it yourself costs the least money and the most time.
What should I check on a used build?
Weight against rating, water damage and leaks, the age and type of the batteries, heater and appliance service history, and the condition of the frame and suspension. Then have a mechanic check the vehicle underneath the camper.
Can I finance an expedition vehicle?
Often, through RV or specialty lenders, depending on the vehicle and how it is titled. Dealers who sell these regularly know which lenders will.
How high is Idaho?
From Lewiston at 740 feet to Borah Peak at 12,662.
Altitude decides what your engine, your brakes and your lungs have to work with, and how late in the year the passes open.
02,0004,0006,0008,00010,00012,000
Feet above sea level
Towns
StanleyWhere State Highway 21 meets State Highway 75 in the Sawtooth Valley. The Salmon River and Ponderosa Pine scenic byways both start here, and the Custer Motorway leaves Highway 75 eleven miles east.6,260 ft
KetchumOn State Highway 75 at the south end of the Sawtooth National Recreation Area. The Sawtooth Scenic Byway climbs north from here to Galena Summit.5,844 ft
ArcoWhere US 20, US 26 and US 93 meet. The gateway town for Craters of the Moon National Monument and Preserve and its Loop Road.5,325 ft
ChallisOn the Salmon River Scenic Byway. BLM field office, and the north end of the Custer Motorway past the Land of the Yankee Fork interpretive center.5,246 ft
McCallOn Payette Lake north of Boise, in the Payette National Forest, which reaches east to the Frank Church-River of No Return.5,013 ft
Elk CityEnd of State Highway 14 and of the Elk City Wagon Road. The Forest Service calls it a small, full-service community with fuel; the Magruder corridor starts past Red River.4,011 ft
SalmonHeadquarters of the Salmon-Challis National Forest and a BLM field office. The BLM calls it a full-service community, and the Lewis and Clark Back Country Byway starts at Tendoy, 19 miles south.3,941 ft
Twin FallsOn I-84 above the Snake River canyon. BLM district office, with the Jarbidge Field Office, for the desert south of the highway.3,733 ft
GrangevilleOn US 95 at the edge of the Camas Prairie. State Highway 14 runs east from here toward Elk City and the west end of the Magruder Road Corridor.3,398 ft
BoiseState capital on I-84. BLM Idaho state office and Boise District, with the Four Rivers and Bruneau field offices. State Highway 21, the Ponderosa Pine Scenic Byway, runs from here to Stanley.2,700 ft
MarsingOn the Snake River southwest of Boise. The BLM’s Owyhee Field Office, which looks after the Owyhee Uplands Back Country Byway, is in town.2,297 ft
Coeur d’AleneOn I-90 in the Panhandle. BLM district and field office, and the service town for the Idaho Panhandle National Forests.2,192 ft
SandpointWhere US 95 meets US 2 north of Lake Pend Oreille. Endowment land north of the lake carries a grizzly bear food storage requirement.2,101 ft
RigginsOn US 95 where the Little Salmon meets the Salmon River, between the Payette and Nez Perce-Clearwater national forests and below the Hells Canyon rim.1,806 ft
KamiahOn US 12 beside the Clearwater River. Supervisor’s office for the Nez Perce-Clearwater National Forests and the western approach to the Lolo Motorway.1,239 ft
LewistonWhere US 12 meets US 95 on the Snake River, close to the state’s low point of 710 feet. West end of the Northwest Passage Scenic Byway and a base for Hells Canyon.740 ft
Passes, high roads and summits
Borah PeakThe highest point in Idaho, in Custer County. No road to the top12,662 ft
Galena SummitSawtooth Scenic Byway: Shoshone north through Ketchum to the Sawtooth Valley8,701 ft
Magruder Road CorridorRed River, east of Elk City, to Darby, Montana7,920 ft
Lemhi PassLewis and Clark Back Country Byway and Adventure Road: A loop from Tendoy on State Highway 28, 19 miles south of Salmon7,368 ft
Willow Creek SummitUS 93 between Mackay and Challis, below the west face of Borah Peak7,165 ft
Banner SummitPonderosa Pine Scenic Byway: Stanley to Boise on State Highway 217,056 ft
Pass, road and summit elevations are the figures published by the agency that manages them. Town elevations are the town’s or county’s own
figure where it publishes an exact one; the rest are from the U.S. Geological Survey (3D Elevation Program at the place’s official coordinates),
retrieved September 18, 2026. Every source is listed at the foot of the page.
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