BLACKOUT, the Men of ONYX’s bi-annual leather run, is coming home to Chicago to celebrate its 30th anniversary from Oct. 16 – 19, 2025. ONYX Midwest is going back to tradition with Blackout 30 by offering breakout sessions that will educate, explore and empower your mind; a bar crawl that will give you a glimpse into the Chicago Leather community; an infamous ONYX dance that will leave you dripping with perspiration; play parties that will satisfy your innermost hunger for kink; and an AGM/awards dinner that will highlight growth, and recognize some of our outstanding members.

BLACKOUT Weekend registration is available now: BLACKOUT Registration

For more details about BLACKOUT 30 weekend and Sponsorship details, visit

*It is recommended you arrive on Thursday, October 16th and stay through Monday, October 20th to maximize your Blackout 30 experience and enjoy the city of Chicago.

This is a BLACKOUT you don’t want to miss!