Lewis & Clark - Western National Parks Association

Lewis & Clark

National Historic Trail


Follow the historic outbound and inbound routes of the Lewis and Clark Expedition, as well as the preparatory section from Pittsburgh, Pennsylvania, to Wood River, Illinois. The trail is about 4,900 miles long, extending from Pittsburgh, Pennsylvania, to the mouth of the Columbia River near present-day Astoria, Oregon.

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Explore the Park

Lewis & Clark National Historic Trail spans 4,900-miles following the routes of the Lewis & Clark Expedition through 16 states, from Pittsburgh, Pennsylvania, to the mouth of the Columbia River near Astoria, Oregon.

Since our founding in 1938

WNPA has provided more than

$126 million

in aid to our partner parks to fund educational programs, initiatives, and scientific research

Kids in Parks

National parks are places where kids can dream up great adventures! Taking in amazing scenery. Testing out new skills. Exploring places kids may have only heard about. But most importantly, creating new memories with friends and family.

Our public lands are our public commons. They belong to all of us as part of our natural and cultural heritage. They remind us of a larger world that has existed long before the arrival of humans and will survive long after we are gone. –Terry Tempest Williams, Author & Conservationist

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Bring the Parks Home

When you can’t get to a national park for a visit, experience it from the comfort of your home. WNPA’s online store is packed with ranger-approved park collectibles, books, toys, and clothing. Shop for a special item.