The Great Sauk Trail is a major Native American route that ran between Detroit, Chicago and terminated at Rock Island on the Mississippi river. Originally created by migrating bison, the trail was only about a foot wide but also a foot deep as eons of travelers walked along it single file. It was used over a thousand years.
The Saginaw Trail is the oldest and most traveled route in the Indian trail system in Michigan. Starting from the Straits of Detroit to Saginaw. It was a trading route with many other trails leading off. Today the trail is denoted as a great American Roadway starting with Woodward Avenue in Detroit.