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Welcome to The Big C Athletic Club, the premier fitness club in Concord and home to over 30 years of experience and expertise, where we make you feel at home!

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  • “A great club with dedicated staff, convenient location, good for the body and soul!”

  • “The no pressure, great classes, and family-like atmosphere!”

  • “Thank you, Big C family, for a fantastic Zumba class this morning. I am so happy to be part of this amazing family environment that this gym offers.”

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  • A C. Lafayette, CA

    I love this gym! I come to this gym at least 4-5 days a week! I would have given five stars but sometimes the girls at the front desk around 5 or so can be a little sassy and rude! Otherwise i love this place!

  • Paul B. Crockett, CA

    I recently joined The Big C. It's pricier than my previous gym which was Danville Fit (formerly Bally's). The Big C is remarkably clean. Something I really appreciate. I love the steam room and the Jacuzzi. These are all features Danville Fit did not...

  • Kimberly P. Fort Lauderdale, FL

    Went here today on a Guest Pass with my co-worker. We participated in the Total Body Conditioning class with Juli. Boy, was the workout intense. Filled with a little bit of cardio, weights and abs. I truly enjoyed the class. Please note this isn't a ...

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About Us

The Big C Athletic Club

Phone (925) 671-2110
Hours Mon, Tue, Wed, Thu, Fri: 5:30 am - 10:00 pm
Sat: 7:00 am - 6:00 pm
Sun: 8:00 am - 2:00 pm