>>1014201Im sure you know to go to preserves on weekdays. Weekends are garunteed to have too many people wandering around. Theres this decently big preserve by orland park. I went on a weekday and ran into only like 4 people over the course of two and a half hours. I was able to hang out by a lake all alone, and it was far enough in that all i heard was the wind and birds. But if you want to never see a single person, i think youre either going to have to get lucky and go on an especially slow day, or just get as far away from Chicago as possible.