National Park Service, Nebraska.
The Lewis and Clark National Historic Trail is approximately 4,900 miles long, extending from Pittsburgh, Pennsylvania, to the mouth of the Columbia River, near present day Astoria, Oregon. It follows 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.
Lewis & Clark National Historic Trail Headquarters Visitor Center is located inside DOI, National Park Service, Interior Region 3,4,5 Office. We are right on the Missouri River next to the Bob Kerrey Pedestrian Bridge in downtown Omaha, NE.