Welcome to Flatirons Performance

take a free class

Every 1st and 3rd Thursday of the month. Come see what we are all about by joining one of our free classes. Meet the trainers and the group, and become a part of our community.

Customer testimonials

  • Brian, FPC owner, was so welcoming for our visit as guests. The facility is spacious and well stocked with modern equipment. The instruction was high quality, and Brian was very helpful answering questions. His feedback was encouraging and professional. My girlfriend found the gym very approachable for a variety of skill levels. I look forward to training here on our next visit.

    Garrett Herfkens
  • Fantastic customer service and quality training. I've seen vast improvement in my performance!! The knowledgeable staff do a great job of offering fitness and diet pointers and tips. On top of the personalized training opportunities, the gym also offers spectacular Crossfit and gymnastics classes.

    Ashley Dancer
  • I have been going here for 5 years and absolutely love it! It's a great way to get in shape and train for basically any sport. On top of that its a great community and I have found myself a second family. Been too other gyms in Boulder and this one is by far the best.

    Dayna Larsen
  • I absolutely love the sense of community here and the fact that I'm able to work on and improve in all aspects: gymnastics, Olympic lifts, strength, and metcon. Since I've gotten here I've seen so many people make huge improvements, it's the best motivation.

    Elizabeth Ady
  • Amazing coaches! This is not a "CrossFit only and nothing else" kind of box. The gym has a full Olympic lifting side with USAW coaches, yoga classes, gymnastics classes, strength classes, strongman classes and the oh so infamous daily WOD! If you have a goal, Flatirons CrossFit is the BEST way to achieve it in Boulder Colorado!!

    Max Feldman
  • Best gym in Boulder. Staff and community are awesome people to work out with, FCSC has changed the way I view fitness and helped transform the way I work out.

    Benjamin Ray Jameson
  • Great supportive coaches that are there to help you reach your goals. The best part about Flatirons performance center is that they really focus on form and care about your well-being. I've been to other gyms where the coaches don't coach nor do they care about your form. That's not the case with Flatirons. Such a great community with awesome motivating people. I've never been to a better gym before.

    Lexi Van der Linden
  • I join FPC after getting tired of the corporate gym scene! This has been the best move gym wise i have ever made. There is always a more experienced person there than myself, so advise is never far away! Basically this is the perfect spot to get strong and meet your fitness goals!

    James Hanley
  • Excellent facility, equipment, coaches, and programming. Most of all, the community is the BEST. I love coming in to FPC for my daily workout, and I've seen great results, but more importantly, I love coming in to FPC to see my friends!

    David Wood



Our community

Our community is our greatest asset. Follow us on Instagram @flatironsperformance.

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