Race Changes & Deferrals
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For upgrades: Click here to sign-in to your Chronotrack account. Click on the Byline Bank Chicago Spring Half Marathon option and select the “Race Change” option. Follow the instructions on the screen. Please keep in mind that you will be prompted to pay the difference in fees between the two distances at this time.

For changes to a shorter distance: Please make sure to email info@chicagohalfmarathon.com to complete your request. All changes will be made pending availability. While there is no charge for a change to a shorter distance, please keep in mind that there is no refund for the difference in fees.

ALL CHANGES MUST BE COMPLETED/REQUESTED TWO WEEKS PRIOR TO THE EVENT. The last day for changes is Friday, May 5, 2017. All change requests after the cut-off, pending availability, will be completed in person at packet pickup.


The Byline Bank Chicago Spring Half Marathon & 10K has a strict no refund policy.


Deferrals allow a participant unable to attend this year’s event to transfer their registration to the following year. The deferral is applied only to the event in question, in this case the 2018 Chicago Spring Half Marathon & 10K. If you would like to defer your entry to next year, please log-in to your Chronotrack account, select the Chicago Spring Half Marathon & 10K option and select the “Race Change” option. Follow the instructions to “Defer my entry.”

Please note: A deferral fee of $30.00 will be administered at this time. Once you complete your purchase, you will be sent an email confirmation of your purchase that will contain an alpha numeric code which you will then use to register for the 2019 event as soon as registration opens.