Chicago City-O 2026 - Sunday, June 7, 2026
Chicago City-O 2026
You do not need to have an Orienteering USA membership to register for individual club events. You can choose the "Enter Data Manually" option below and register for our event. Online registration will close at Midnight on Friday, June 5th. The start/finish will be at the REI store at 905 W Eastman. We will gather there for a mass start at 10:15am . There will be a 4 hour time limit to gather as many points as you can. You can go out for as long as you want up to the 4 hour limit. If you are going out as a group, only one person needs to register and you only pay one fee. While registering you will enter your team name, number of participants, team member names and have an opportunity to buy extra maps for them at only $3 each! This event will involve a sheet of questions - you answer a question for each location to prove you were there. Please bring your own writing instrument for your clue sheet, if possible.

Please enter your Orienteering USA username and password in the fields below. EventRegister will contact the Orienteering USA membership database, retrieve your contact details and automatically populate your contact information on the next registration page.

Please visit the Orienteering USA Membership Page if you have forgotten your Orienteering USA membership username or password.

Click the "Enter Data Manually" button if you are not Orienteering USA member or prefer to enter your participant information manually.

Enter Data Manually

Looking to become a member? Please visit the Orienteering USA New Member Page to join.

To learn more about Orienteering USA Membership, please visit Orienteering USA Membership Page.


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For questions or problems, please contact event registrar