CHICAGO (WBBM NEWSRADIO) -- The weather is brutal, yes, but how would you like to run 13.1 miles in it?
That's what some dedicated -- or perhaps, crazy -- people are doing on Saturday morning along Chicago's lakefront.
About 3,000 people are registered to run in the F3 Half Marathon, which has been taking place for about 10 years and has been growing every year.
Erin Vandenberg is one of the race organizers and tells WBBM that participants "clearly want to test themselves.” For everyone on social media who say it's nuts, there are even more who say they want to do it, she said.
Vandenburg said runners are at least moving. It’s the volunteers who have the tough job. They will have warming vans at every aid station.