From their instagram post:

This Thursday, join us for another night ride that will end at tribechi !
Meet Up: 7:30pm McCormick Place (2301 S King Drive) Ride out: 8pm End: tribechi (1239 W Lake Street)
Bike Marshals will be available to take riders back to McCormick

https://www.instagram.com/p/CvaNEu7rOwc/