Washington has 29 scenic byways mapped in the US Department of Transportation data, together covering about 3,209 miles of road. The longest is the Lewis and Clark Trail Highway, running roughly 538 mapped miles. This interactive map plots every Washington 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 Washington scenic byways map
The map opens framed on Washington. 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 Washington
Every scenic byway recorded in Washington, with its designation and mapped length. Routes that run into neighbouring states are listed at their full length.
Scenic byway
Designation
Mapped length
Lewis and Clark Trail Highway
State Scenic Byway
538 mi
Cascade Loop
Local / Other
425 mi
Pacific Coast Scenic Byway – Washington
State Scenic Byway
357 mi
Palouse Scenic Byway
State Scenic Byway
207 mi
International Selkirk Loop
National Scenic Byway
162 mi
Coulee Corridor Scenic Byway
National Scenic Byway
152 mi
North Cascades Scenic Highway
State Scenic Byway
138 mi
Stevens Pass Greenway
National Scenic Byway
127 mi
White Pass Scenic Byway
State Scenic Byway
122 mi
Mountains to Sound Greenway – I-90
National Scenic Byway
99 mi
Chinook Scenic Byway
National Scenic Byway
97 mi
Columbia River Gorge Scenic Byway – Washington
State Scenic Byway
84 mi
Okanogan Scenic Byway
State Scenic Byway
71 mi
Strait of Juan de Fuca Highway – SR 112
National Scenic Byway
61 mi
Yakama Scenic Byway
State Scenic Byway
58 mi
Mount Baker Highway (Route 542)
State Scenic Byway
53 mi
Mountain Loop Scenic Byway
Local / Other
52 mi
Whidbey Island Scenic Byway
State Scenic Byway
47 mi
Pend Oreille Valley Scenic Byway
State Scenic Byway
47 mi
Spirit Lake Memorial Highway
State Scenic Byway
44 mi
Sherman Pass Scenic Byway
State Scenic Byway
43 mi
Yakima River Canyon
State Scenic Byway
37 mi
Cape Flattery Tribal Scenic Byway
State Scenic Byway
34 mi
Cascade Valleys Heritage Corridor
State Scenic Byway
30 mi
Panhandle Historic Rivers Passage Scenic Byway
State Scenic Byway
28 mi
North Pend Oreille Scenic Byway
State Scenic Byway
26 mi
Swift Water Corridor
State Scenic Byway
25 mi
Chuckanut Drive
State Scenic Byway
24 mi
Cranberry Coast Scenic Byway
State Scenic Byway
24 mi
Byway designations in Washington
National Scenic Byway × 6 — a federally recognised route with outstanding qualities
State Scenic Byway × 21 — designated by the state scenic byway programme
Local / Other × 2 — a locally designated or back-country route
Planning a scenic drive in Washington
Start with the headline routes. The state’s National Scenic Byways — International Selkirk Loop, Coulee Corridor Scenic Byway, Stevens Pass Greenway — 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 Washington campgrounds map, and for a different pace try the Washington 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.
Washington scenic byways: frequently asked questions
How many scenic byways does Washington have?
This map shows 29 scenic byways in Washington, covering about 3,209 mapped miles.
What is the longest scenic byway in Washington?
The Lewis and Clark Trail Highway is the longest, at roughly 538 mapped miles.
Does Washington have any All-American Roads?
Washington has no All-American Roads in this dataset, but it does have 6 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.
