The trail, which spans through eleven U.S. states, is maintained by various federal and state government agencies; it passes through some 100 historic sites, notably archaeological locations including the Knife River Indian Villages National Historic Site.
O carreiro, que discorre a través de once estados, é xestionado por varias axencias federais e estatais, pasa por uns 100 sitios históricos, lugares arqueolóxicos en particular como o Knife River Indian Villages National Historic Site.