Between ferry rides and the camping reservation fee, Rock Island State Park may very well be one of the most expensive backpacking destinations in the Midwest (if not the most). But it offers history and beauty, with views like no other backpacking destination within six hours of Chicago. It’s four hours from Milwaukee, and 2.5 hours from Green Bay. It’s also great for day hikes, family camping, paddling, beginner backpacking trips, or any nature lover spending time in the Door County area!