<Tr> <Th> Administrator </Th> <Td> National Park Service </Td> </Tr> <Tr> <Th> Website </Th> <Td> www.nps.gov/lecl </Td> </Tr> <P> The Lewis and Clark National Historic Trail is a route across the United States commemorating the Lewis and Clark Expedition of 1804 to 1806 . It is part of the National Trails System of the United States . It extends for some 3,700 miles (6,000 km) from Wood River, Illinois, to the mouth of the Columbia River in Oregon . </P> <P> The trail is administered by the National Park Service, but sites along the trail are managed by federal land management agencies, state, local, tribal, and private organizations . The trail is not a hiking trail, but provides opportunities for hiking, boating and horseback riding at many locations along the route . The trail is the second longest of the 23 National Scenic and National Historic Trails . Beginning at the Camp Dubois recreation in Illinois, it passes through portions of Missouri, Kansas, Iowa, Nebraska, South Dakota, North Dakota, Montana, Idaho, Oregon, and Washington . </P>

Where does the lewis and clark trail start