The Ice Age Trail is a designated National Scenic Trail for hikers in Wisconsin. Once completed it will run for about 1200 miles (1900 km). This National Scenic Trail lies entirely within the State of Wisconsin. It follows the scars and moraines left by the last ice age.
"The Ice Age Trail Alliance (formerly Ice Age Park & Trail Foundation) is a volunteer- and member-based nonprofit organization whose mission is to create, support and protect a thousand-mile footpath tracing Ice Age formations across Wisconsin — the Ice Age National Scenic Trail". The website has a FAQ, an introduction to landscape and geology, a hiking guide, etc.
Appalachian Trail, Pacific Crest Trail, Ice Age Trail, Florida Trail, Continental Divide Trail, North Country Trail. This is traditionally the place where hikers meet, planning their thing, learning from others.