This year Lil' Ed & The Blues Imperials will headline the end of the race with a free concert in Grant Park that's open to the public.
Katherine Switzer spoke with ABC7 about the race and the post-race concert and activities.
The 13.5 mile race kicked off at 6:30 a.m. at Columbus Drive and Monroe Street.
Humana Rock n' Roll Chicago Marathon
Date: Sunday, July 22
Hours: 6:30 am-12 noon
Address:Columbus and Jackson
Admission: Free
www.runrocknroll.com