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.
Explore the Park
Lewis and Clark National Historic Trail spans 4,900 miles, following the routes of the Lewis and Clark Expedition from Pittsburgh, Pennsylvania, to the mouth of the Columbia River near Astoria, Oregon. On November 10, 1978, the trail was established as part of the National Trails System. Spanning the continental United States, the trail connects many tribal lands and 16 states. The Lewis and Clark Expedition contributed significantly to scientific knowledge and to profound social, political, cultural, economic, and environmental changes to the land and people of North America. Members of the expedition traded with, learned from, and depended on friendly relations with more than 50 American Indian tribes throughout the course of their journey. Sacagawea, a Lemhi Shoshone woman who joined the expedition in April 1805, was essential to the success of the journey, sharing her knowledge of the landscape and the Shoshone language.
WNPA has provided more than
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.
Stories from all parks
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
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.