Idaho has 34 scenic byways mapped in the US Department of Transportation data, together covering about 2,634 miles of road. The longest is the Northwest Passage Scenic Byway, running roughly 202 mapped miles. This interactive map plots every Idaho scenic byway — filter by designation, search any town or address, and click a route for its details.
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Scenic Byways
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Miles Mapped
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All-American Roads
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National Scenic Byways
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Route data: US Department of Transportation scenic byway layers (geo.dot.gov). Location search by OpenStreetMap Nominatim. Routes show the mapped corridor and are for reference only – check current conditions before travelling.
How to use the Idaho scenic byways map
The map opens framed on Idaho. Each line is one scenic byway, coloured by designation. Zoom with the scroll wheel, click any route to see its name, designation, administering agency and mapped length, and use the designation checkboxes or the name filter to focus on the routes you want. Some byways continue across the state line — their full mapped length is shown.
Scenic byways in Idaho
Every scenic byway recorded in Idaho, with its designation and mapped length. Routes that run into neighbouring states are listed at their full length.
Scenic byway
Designation
Mapped length
Northwest Passage Scenic Byway
Local / Other
202 mi
International Selkirk Scenic Loop
Local / Other
191 mi
Salmon River Scenic Byway
State Scenic Byway
161 mi
Peaks to Craters Scenic Byway
State Scenic Byway
140 mi
Sacajawea Historic Byway
State Scenic Byway
136 mi
Ponderosa Pine Scenic Byway
State Scenic Byway
126 mi
Sawtooth Scenic Byway
State Scenic Byway
116 mi
Pioneer Historic Byway
National Scenic Byway
115 mi
Payette River Scenic Byway
National Scenic Byway
111 mi
Owyhee Uplands Back Country Byway
Local / Other
102 mi
Oregon Trail Bear Lake Scenic Byway
State Scenic Byway
95 mi
Fort Henry Historic Byway
State Scenic Byway
94 mi
Oregon Trail Back Country Byway
State Scenic Byway
93 mi
St. Joe River Scenic Byway
Local / Other
88 mi
White Pine Scenic Byway
State Scenic Byway
82 mi
Teton Scenic Byway
State Scenic Byway
69 mi
Thousand Springs Scenic Byway
State Scenic Byway
64 mi
Wild Horse Trail Scenic Byway
Local / Other
58 mi
Lower Payette River Heritage Scenic Byway
State Scenic Byway
54 mi
Elk River Back Country Byway
State Scenic Byway
54 mi
Snake River Canyon Scenic Byway
State Scenic Byway
51 mi
City of Rocks Back Country Byway
State Scenic Byway
51 mi
Lost Gold Trails Loop
State Scenic Byway
48 mi
Western Heritage Historic Byway
National Scenic Byway
43 mi
Gold Rush Historic Byway
Local / Other
42 mi
Lewis and Clark Back Country Byway
Local / Other
37 mi
Lake Coeur D’Alene Scenic Byway
State Scenic Byway
36 mi
Wildlife Canyon Scenic Byway
Local / Other
34 mi
Hells Canyon Scenic Byway
Local / Other
33 mi
Pend Oreille Scenic Byway
National Scenic Byway
33 mi
Panhandle Historic Rivers Passage
Local / Other
28 mi
Mesa Falls Scenic Byway
State Scenic Byway
27 mi
Pposed Snake River Canyon Scenic Byway
Local / Other
21 mi
White Horse Trail Scenic Byway
State Scenic Byway
0 mi
Byway designations in Idaho
National Scenic Byway × 31 — a federally recognised route with outstanding qualities
State Scenic Byway × 84 — designated by the state scenic byway programme
Local / Other × 329 — a locally designated or back-country route
Planning a scenic drive in Idaho
Start with the headline routes. The state’s National Scenic Byways — Pioneer Historic Byway, Payette River Scenic Byway, Western Heritage Historic Byway — are a strong starting point. Check seasonal conditions before you travel — mountain and back-country byways can close in winter. For overnight stops along the way, see our Idaho campgrounds map, and for a different pace try the Idaho cycling map.
Route data comes from the US Department of Transportation scenic byway layers at geo.dot.gov, harmonised into a single dataset. It reflects what the transportation agencies publish and may lag local designations. Routes show the mapped corridor and are for planning only — check current road conditions before you travel.
Idaho scenic byways: frequently asked questions
How many scenic byways does Idaho have?
This map shows 34 scenic byways in Idaho, covering about 2,634 mapped miles.
What is the longest scenic byway in Idaho?
The Northwest Passage Scenic Byway is the longest, at roughly 202 mapped miles.
Does Idaho have any All-American Roads?
Idaho has no All-American Roads in this dataset, but it does have 31 National Scenic Byways and a wider set of state-designated routes.
I'm Daniel O'Donohue, the voice and creator behind The MapScaping Podcast ( A podcast for the geospatial community ). With a professional background as a geospatial specialist, I've spent years harnessing the power of spatial to unravel the complexities of our world, one layer at a time.
