01 · Entry mechanism
Lottery
A published application is not the same as a confirmed bib. Keep a second race in the season until the result is final.
Chicago Marathon · October 2027
Registration
Major weekend operating notes
02 · Published cost
$250
Non-charity entry: $250 US / $260 international, plus processing. Applications close October 29 at 2 p.m. US Central; drawing results December 8. Charity fees and fundraising are separate.
03 · Action window
Opens 2026-10-08; closes 2026-10-29.
Save the official page and calendar dates; third-party reminders are a backup, never the source of truth.
Ballot open. Entry runs $250 before travel. It's a lottery. Plenty of people enter several years running before they draw a number, so have a backup race in mind.
Opens October 8, 2026. Closes October 29, 2026.