Gyms in Boulder, Colorado

Colorado Athletic Club – Flatirons

Fitness Elevated

Unmatched Amenities | Unbelievable Trainers | Unparalleled Community

Athletic Clubs in Boulder

We Are
Boulder

Welcome to Colorado Athletic Club – Flatirons, where Fitness Coaches are your friends, and great conversations carry on long after your workout. Our members and guests love our social activities that range from happy hours to group hikes and training for the Bolder Boulder.

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Boulder Gym Membership

Comfortable and welcoming, Colorado Athletic Club-Flatirons offers our members and guests the best fitness options in Boulder County.

Boulder Gym Membership

Fitness Training in Boulder

There’s training, and then there’s personal training. Get to know our professionally certified team, and discover they’re as talented at what they do as they are personable. With sessions available throughout the day, achieving and surpassing your goals is closer than ever.

Fitness Training in Boulder

Court Sports | Racquetball - Squash - Tennis

Boulder’s premier destination for racquetball, squash and tennis, our Flatirons club has a vibrant court sports community. Take lessons, find competitive matches or just hit around for awhile. The ball is in your court.

Court Sports | Racquetball - Squash - Tennis

Indoor Swimming in Boulder

Looking for laps or relaxation? Why not both? We’ve got options. Our indoor pool has four lanes for your training needs. With over 300 days of sunshine each year, enjoy our heated, six-lane outdoor pool year round.

Indoor Swimming in Boulder

Fitness Studios in Boulder

The studios at Colorado Athletic Club – Flatirons are designed for you to get the most from your workout. Seamlessly move from a warrior pose in yoga class to our outdoor pool as you get ready for your next triathlon.

Fitness Studios in Boulder

Family Fitness in Boulder

Boulder has mastered the work/life balance better than most cities. Spending quality time with your family—and staying healthy while doing so—is easier than ever with our Family and Kids’ programs.

Family Fitness in Boulder

Join a gym in Boulder

See what everyone is talking about


When you set foot in your new club, youʼll feel the energy and camaraderie and meet members just like you.

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Not quite ready to join us at the club? Our Virtual Club will inspire you!

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