NOTE: NBC 5 will offer complete live coverage of the 2017 race beginning at 7 a.m. CT online and on TV. The race can be streamed live from around world on the NBC Chicago app, which will also offer a live stream of the finish line from 11 a.m. to 3 p.m. Thousands of runners will give it their best at the Bank of America Chicago Marathon on Oct. 8. But how many exactly? Here are some numbers you might not have known about this year's race.
A look at the 2017 Chicago Marathon by the numbers.