Why Flatirons CrossFit?


  • Supportive atmosphere  
  • Colorado's only full time, fully staff          Olympic Weightlifting Program      outside of the OTC
  • 1-on-1 attention
  • Focus on form and movement virtuosity
  • Expert coaching staff
  • Fun, challenging group workouts

Proven to get you stronger, leaner, healthier, and happier 

We at Flatirons CrossFit believe that even though you may not be a professional athlete, you deserve to be treated like one! Our members get to learn from our highly qualified coaching staff, have access to our specialty programs at no additional charge, and succeed with the support of our truly amazing community. Come learn, grow, and become a healthier, fitter, and happier version of yourself.
"Best gym in Boulder. Staff and community are awesome people to work out with, FCF has changed the way I view fitness and helped transform the way I work out." - Ben

"Brian and his staff at Flatirons Crossfit are top notch.  It is very rare to find a gym that incorporates not just the physical benefits of crossfit but also recognizes the importance of developing mental strength and the mindset it takes to push through adversity.  I owe a lot of the successes that I have had to Flatirons crossfit.  Brian has extensive knowledge on the ability to train your mind and body for the rigors of life. Whether you’re the elite athlete who’s training for the next big game, or the older guy/ gal who hasn’t done a workout since high school P.E., Brian will cater your crossfit experience to accomplish whatever goals you may have.  To all the FC members, keep on crushing it.  To all those undecided, put the fear and self-doubt aside, step into the gym and step into a life of boldness." - Collin, USN SEAL  



Get Started FREE Trial Class
Create a Mobile Website
View Site in Mobile | Classic
Share by: