The Chicago Marathon attracts 40,000 runners, of which 10,000 come from countries other than the US. Course records stand to Paula Radcliffe at 2:17:18 from 2002, and to Dennis Kimetto, who ran 2:03:45 in 2013.
Bank of America Chicago Marathon
A virtual event may be available. Please consult the race website.
You can also subscribe to the AIMS calendar in your calendaring application of choice, whether on your phone, tablet or computer. Simply subscribe to webcal://aims-worldrunning.org/events.ics in your calendar app.