The Lewis and Clark Expedition traveled from Pennsylvania to the Pacific Ocean and back between 1803 and 1806. Over two hundred years later, visitors can retrace the Expedition's path by following the Lewis and Clark National Historic Trail. Today's Trail is the product of many diverse groups: federal, tribal, state and local agencies, and public and private organizations. These groups work together across more than 4,900 miles of the Trail to provide opportunities for visitors to experience and learn about the Lewis and Clark Expedition and its many stories.
To learn more about sites along the Trail, visit our Basic Information page.
State by State Guide
Last updated: October 12, 2022