The Sauk Trail began as a Native American trail running through Illinois , Indiana and Michigan in the United States]. From west to east, the trail ran from Rock Island on the Mississippi River to the Illinois River near modern Peru then along the north bank of that river to Joliet, and on to Valparaiso, Indiana. Then it ran northeasterly to LaPorte and into southern Michigan running through Niles, Three Rivers, Ypsilanti and ending at the Detroit River near Detroit.
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