Each year tens of thousands of people take part in 5ks, 10ks, marathons, half-marathons and more in Chicago. But how does one get permission? And what’s it like to navigate the process and work with the various city departments to put on an event like this? As we get ready for the 46th annual Chicago Marathon this weekend, Curious City talked to one race director who organizes ultramarathons to find out. And of course, as you might imagine, there’s just a little bit of bureaucracy involved.