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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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  • “This club is great! ”

  • “Thank you, Big C, for bringing La Blast to the early mornings! I did the Hustle, The Tush Push, and the Electric Slide all before 6:30 am! What a great start to my weekend.”

  • “Karen James is what makes me come to the gym every morning. She's so encouraging, so helpful. She's quite simply the best! She's what makes the Big C so good.”

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Customer Reviews

  • Mary Cissna

    Updated new equipment, heated swimming pool, steam room, sauna, women's and men's locker rooms. Trainer's and Teachers with wide range of classes and competition games.

  • Niranjan Shivaram

    Great athletic club! Have been a member for over 3 years. It is a bit on the expensive side but they have very good facilities. Definitely worth the money if you make good use of what they offer.

  • Sierra Elsken

    Classes are great all the instructors are super friendly. The gym is so clean and never too crowded.

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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