One of the most enduring of those remnants is the Ice Age Trail—a 1,200-mile route that traces the path of the last continental glacier and highlights Wisconsin’s most scenic terrain. The Ice Age Trail stretches across the state, from Interstate State Park in St. Croix Falls on the Minnesota border to Potawatomi State Park on the shores of Sturgeon Bay. This, according to the Ice Age Trail Alliance, is by design: the route is meant not only to reveal the power of the glaciers, but also to connect people and places along the way. Fall is when the Ice Age Trail really shines, thanks to cooling temperatures and the shift of colors. In October, during Wisconsin’s month-long Mammoth Hike Challenge, visitors are challenged to hike 45 miles of the Ice Age Trail and visit three Ice Age Trail Communities (hiker friendly towns and villages) over the course of the month.