The Chicago Marathon is one of the six World Marathon Majors and is held annually in October. In the table below, you will find when Chicago Marathon is official marked and celebrated in United States over a span of 15 years. All the information display below is also available via our API as well as downloadable as a csv. Signup here to get started.

Our API allows you to specify the State and Region as part of the API requests, thereby limiting the requests to a particular state or city. View the API documentation for a full description of the supported countries, states and regions.

Year Day of the Week Date Name
2010
Sunday October 10 Chicago Marathon
2011
Sunday October 9 Chicago Marathon
2012
Sunday October 7 Chicago Marathon
2013
Sunday October 13 Chicago Marathon
2014
Sunday October 12 Chicago Marathon
2015
Sunday October 11 Chicago Marathon
2016
Sunday October 9 Chicago Marathon
2017
Sunday October 8 Chicago Marathon
2018
Sunday October 7 Chicago Marathon
2019
Sunday October 13 Chicago Marathon
2020
Saturday October 10 Chicago Marathon
2021
Sunday October 10 Chicago Marathon

These dates may be modified as official changes are announced, so please check back regularly for updates or sign up for our newsletter to receive regular updates. All updates are automatically added to our API as well.

Our team of holiday editors are continuously monitoring for changes from government agencies and local authorities to this data to ensure we're providing the most accurate information possible. If you happen to notice an error, please get in touch.