ALTON – 13 southwest Illinois communities will celebrate the legacy of Route 66 Oct. 9-11, 2026 with Great Rivers & Routes Last Hundred Miles Festival, a three-day series of events marking the highway’s anniversary and highlighting the history and communities along its final 100 miles in Illinois.From Virden in the north to East St. Louis on the Mississippi River, the festival will bring together communities, businesses, organizations and Route 66 enthusiasts for events that show...