The Lewis and Clark National Historic Trail extends over 3,700 miles, passes through 11 states, and includes more than 100 sites from Illinois to the Pacific Coast. For directions to specific sites or locations along the Trail please contact the site you plan to visit or Trail headquarters in Omaha, Nebraska. Click on the state names below for more information on Trail sites in those states.
Visitor Center at Trail Headquarters
Did You Know?
Two hundred years after the Lewis and Clark Expedition, the only physical evidence of the journey is found near Billings, MT. In July 1805, William Clark carved his name into the soft rock of what he called Pompeys Tower. This site is now preserved at Pompeys Pillar National Monument.