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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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  • “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.”

  • “Big C is a great, friendly full service place to work out, swim, play hoops, tennis, aerobics, weights and even sweat to salsa in world beat! Once you join you will always stay a member.”

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The Big C Athletic Club

38 reviews
  • Christopher G.

    TL;DR: Well equipped gym with relatively low attendance means open machines and no feelings of judgement! Been going here for about a year now after... Read More

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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