The Undefined
No priceonline
They don't publish a drop-in price online. Usual in Illinois: $25.
Book a drop-in
No online booking. Call or email to book in.
- Phone
- +17739715884
- Turn on JavaScript to see the address
- Website
- undefinedchi.com
- @undefinedchi
Before you go
- What does it cost?
- Not published online. Dropped in recently? Tell us what you paid. Passes: 4 class pack $160 / $140; unlimited S&C and boxing $250 per month; unlimited S&C $195 per month; open gym $150 per month.
- What are the visitor rules?
- 4-class packs; no single drop-in.
Checked Oct 24, 2026. Prices change, so confirm with the gym before you go.
- Something wrong or out of date? Send a correction
- Run this gym? Claim this listing (free)