280 Forest Service, 39 BLM, 7 Army Corps and 3 National Park Service. 220 can be booked ahead
When a guide is the right call
Two roads make the case. The Magruder Road Corridor runs 101 miles between two wilderness areas with few turnouts and no services, and the Forest Service expects six to eight hours at 12 to 15 miles per hour. The Lolo Motorway is a one-lane road along high ridges with a short season and no fuel, water or stores.
A guide is worth it mostly for timing and for the boundary. Motorized travel is not permitted in the wilderness on either side of the Magruder road, and knowing which forest roads are open in a given month is local knowledge that a map does not carry.
A guide earns the fee in the places where the map runs out of detail. They know which wash flooded last week, which gate is locked, where the fuel is, and how long the hard section really takes with a group.
A guided trip usually brings
01Route knowledge and current conditions
02Permits and access already arranged
03Recovery skill and equipment
04A pace that suits the group
05The history and natural history of the place
How to choose a guide
Ask the questions a land manager would.
01Ask whether they hold the permits and insurance required to operate commercially on the land they use.
02Ask about group size and the minimum vehicle requirements.
03Ask what is included: meals, camping gear, communications, a support vehicle.
04Ask about first-aid training and the plan for emergencies.
What to tell a guide
Honesty about experience makes for a better trip.
01Your vehicle and what has been done to it
02Your experience off pavement
03Who is coming, including children and dogs
04Your dates, and what you most want to see
Questions people ask
Do I need a guide?
Not for most travel. A guide earns the fee on routes that are remote, technical or hard to get permits for, and on first trips where you would rather learn than guess.
Can I join a guided trip in my own vehicle?
That is how most overland guiding works. The guide leads in their vehicle, you drive yours, and the trip sets minimum requirements for the vehicles that come.
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.
