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Boulder Fitness Center

Colorado Athletic Club – Flatirons

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Boulder’s Best Athletic Club

Thereʼs nothing routine about a workout at Colorado Athletic Club-Flatirons. Discover Boulder’s premier athletic club and gym. Find a new passion or revive your glory days in our pools and on our basketball, racquetball, and tennis courts…all while learning alongside our incredible coaching staff.

Find Your Fitness Passion

5-Star Fitness in Boulder, CO

Fitness is an evolution. What seemed impossible yesterday is todayʼs new normal. What will tomorrow look like?

Find Out Now

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Fitness for All

Tennis, Racquetball, & Basketball Courts

Boulder, CO

  • Lace-up your shoes and find your competitive match on one of our many courts
  • We offer squash, tennis, racquetball and pickleball, all in one convenient location
  • Organize a pickup game or practice your layups on the full-size basketball court

Court Sports

Indoor & Outdoor Pools

Boulder, CO

  • Jump In! With heated indoor and outdoor pools open all year long the water is always perfect at Colorado Athletic Club-Flatirons
  • Swim training and swim lessons are available for current and future swimmers and triathletes
  • Kiddie pool open for the little ones in the summer


Personal Training

Boulder, CO

  • Challenge yourself with our personal and group training classes, offered daily
  • Learn proper techniques and refine your fitness routine with our expert, certified staff
  • Train on the best equipment and with the best staff in Boulder County
  • Pristine studios and classrooms ensure the best environment for your workouts


Have a Fitness Question?

Contact Us Today