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Welcome to Lewis & Clark's Historic Route from Clarkston - Pasco, Washington
Lewis and Clark's Historic Route from Clarkston - Pasco, Washington
Map Credit: Washington State Parks and Recreation Commission


1. On October 10, 1805, the Expedition entered what is now the state of Washington.  West of Clarkston, look for a heritage marker entitled "Lewis and Clark Enter Washington".

2.  Alpowai Interpretive Center is within Chief Timothy State Park, about 8 miles west of Clarkston on US Route 12.  Exhibits tell the Story of Lewis and Clark meeting with the Nez Perce Indians.

3.  Drewyers River Heritage Marker is within Lyons Ferry State Park,  It tells the story of the present Palouse River.  Originally it was named Drewyers River by Lewis and Clark in honor of George Drouillard (Drewyer), a civilian member of the Expedition.

4.  Lewis and Clark Trail Park is 5 miles west of Dayton on US Route 12. (The Forgotten Trail).   An interpretive marker tells the story of the Expedition's journey through this forested site on the return to St. Louis.

5.  Sacajawea Interpretive Center is in Sacajawea State Park at the confluence of the Snake and the Columbia rivers near Pasco. 

October 11 - 15, 1805

April 26 - May 4, 1806



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Eastern Lewis and Clark Trail  Caroline County, Virginia
Washington DC - Pittsburgh, Pennsylvania |    Philadelphia - Pittsburgh, PennsylvaniaPittsburgh - Wood River, Illinois 

Clarksville, Indiana - Louisville, Kentucky
Illinois Wood River
Missouri St. Louis / St. Charles | Jefferson City |Washington 
New Haven / Hermann | Marion | Boonville | Arrow Rock | Glasgow / Fort OsageWeston | Independence
St. Joseph | Kansas City
Kansas Kansas City | Leavenworth  | Atchison
Nebraska Brownville |Nebraska CityPlattsmouth /
Omaha |  
Fort Atkinson | Fort Calhoun | Blair   
Iowa   Council Bluffs /Onawa | Sioux City 
South Dakota Elk Point   |Vermillion|YanktonFort Randall | Chamberlain|
Pierre/Ft. Pierre  Mobridge
North Dakota Fort Yates | Bismarck | Mandan | Washburn | Stanton
Pick City | Riverdale | New Town | Williston

Culbertson | Glasgow | Ft. Benton | Cut Bank | Great Falls
Helena | Three Forks | Billings | Bozeman | Dillon | Butte
Sula | Missoula | Lolo Hot Springs

Idaho SalmonLowell | Orofino | Lewiston
Oregon Umatilla | BoardmanThe Dalles | Hood River
Hermiston | Portland | St. Helens | Astoria/
Cannon Beach/Seaside
Washington Clarkston | Pomeroy | DaytonKennewick | Pasco
Richland | Walla Walla | White Salmon | Vancouver
Longview | Chinook

Free Lewis and Clark Trail information, Lewis and Clark Bicentennial Trail, Lewis and Clark National Park Service Maps, Discovery Expedition, This day in history with Lewis and Clark, Daily Journal Entries by Gary Moulton, Sacagawea, Sakakawea, Sacajawea, E-learning Vignettes, podcasts,  Bicentennial Expedition, Lewis & Clark Information, Maps, Centers, Museums, Signature Events Calendar, Hotels, Motels, RV Parks, Camping on the Lewis and Clark Trail, Lodging Reservations, Lewis and Clark Trail Online Shopping. Lewis & Clark Vacations, Fishing, Whitewater raft and River Adventure Tours, AMTRAK Bicentennial Train, Official Lewis &Clark Trail travel information, An Excellent Source for School Assignments, Lewis and Clark 1804 Timeline, Lewis and Clark 1805 Timeline, Lewis and Clark 1806 Timeline.

Lewis and Clark Trail maps on this web site were provided courtesy of the National Park Service
GPO 1991-557-779

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