Unknown Strength

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United States
Manteno, IL
Unknown Strength

Staffing hours are listed in the hours of service. The gym will be open 24/7 with access if you have an active membership.

Independent Gym (Manteno, Illinois)
24/7 for members only
Week/Day passes only during staffed hours
Mon-Fri 8am-8pm
Sat 8am-2pm
Sun 8am-12pm
- Instagram

09/08/2026

📣 WE’RE LOOKING FOR PERSONAL TRAINERS!

Ready to be your own boss, build your own clientele, and manage your own schedule without working for a gym?

Unknown Strength is looking for motivated personal trainers who want the freedom to run their own training business while being part of a supportive gym community.

What we ask:
• Current personal training certification
• Your own liability insurance
• Professional, motivated, and ready to grow

You’ll manage your own clients and schedule, while we provide the space and environment to help you build the trainer you want to become.

Interested? DM us or email us and let’s see if you’re a good fit for Unknown Strength! 💪

08/19/2026

Happy 1 year to Cooper & Abbi! 🎉💪

We’re incredibly thankful for the employees we have here at Unknown Strength. ❤️

The fact that we’ve only been open for a year and a half and already have employees celebrating over a year with us is one of the coolest things to be apart of.

This is a special place, and it’s run day in and day out by special people who care about the gym and the people in it. A lot goes on behind the scenes to keep this place running, and your hard work never goes unnoticed.

Thank you for everything you do for Unknown Strength and our members.

Happy 1 year y’all!!😊

We appreciate you guys more than you know.

08/12/2026

ENERGY DRINK TIER LIST ⚡️🥤

Let me know what y’all think 👀

What did I get right? Who did I completely disrespect? 😂

Or just let me know if you think I’m crazy.

08/03/2026

🚨 NEW EQUIPMENT ALERT 🚨

People don’t come to Unknown Strength just to work out, they come for the atmosphere, the community, the simplicity, and the equipment.

We take pride in bringing in machines you won’t find in every commercial gym. Every piece is selected with purpose, because the small details matter.

When it comes down to equipment, we know ball 🧐

This is just another step toward building one of the best training facilities around. This place is getting crazy. The only thing around here with a ceiling is the building.

08/02/2026

🏆 UNKNOWN STRENGTH WALL OF FAME 🏆

Not all of us just train, we compete!

We’re proud to recognize the members who represent Unknown Strength by stepping onto competition floors, race courses, and big stages. If you’ve competed in any of the following, we want to feature you on our Wall of Fame:

💪 Powerlifting
🏋️ Olympic Weightlifting
🪨 Strongman / Strongwoman
🏆 Bodybuilding
🔥 HYROX
🏃 Marathon, Ultra Marathon, Triathlon & Ironman

This wall is dedicated to members who put in the work and challenge themselves through legitimate competitions and endurance events.

📸 If you’ve competed, send us a DM with a photo from your event, your placing (if applicable), and the name of the competition. We’ll print it, hang it, and recognize your accomplishment for everyone to see.

We can’t wait to watch this wall grow and celebrate the incredible athletes that make up the Unknown Strength community. 👊

Address

450 S Spruce Street Unit B, C, D
Manteno, IL
60950

Website

http://unknownstrengthgym.com/

Alerts

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