Watch live: 2018 Chicago Marathon

<script type="text/javascript" charset="UTF-8" src="https://www.nbcchicago.com/portableplayer/?cmsID=151013085&videoID=Pde02xF1sdV3&lvshell=151013085&origin=nbcchicago.com&sec=news&subsec=local&fullWidth=y<https://protect-us.mimecast.com/s/GSHVCL9BpltnOj2tBxbjV?domain=nbcchicago.com>"></script>

Live coverage of the 2018 Bank of America Chicago Marathon