It was hot.
93 degrees on a humid September day.
The tickets had been purchased. Nearly 200 fans of running or Peter Sagal or both Peter Sagal and running or the sight of Peter Sagal while running - I mean, who knows? - had dropped a few dollars to join Sagal on the "Ready, Wait Wait, Go!" 5K Fun Run in downtown Chicago on September 10, 2013. Volunteers, used to less strenuous work, showed up and erected tents for Goose Island Beer, Muscle Milk, F3running.com, Universal Sole, and WBEZ. Water was carried because It. Was. HOT.
It was hot enough that a local television station came out to report on the heat.