Where did Lewis and Clark go on the expedition?

The Lewis and Clark Expedition traveled from St. Louis, Missouri, to the Pacific Ocean and back. The expedition was led by Meriwether Lewis and William Clark, and it lasted from May 1804 to September 1806. The expedition covered over 8,000 miles, and it took the explorers through some of the most challenging terrain in North America. The expedition was a success, and it helped to open up the American West to exploration and settlement.