Crossfit Undeniable – Bringing the WOD to Westminster!

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New to CrossFit

Begin here with our Fundamentals program. A step-by-step program where our coaches work closely with you to teach the fundamental movements of CrossFit and prepare you for success!

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Experienced CrossFitters

You know the drill, check the WOD, pick a class from our Schedule, or click below for more info on Memberships!

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Undeniable Barbell Club

Just looking for some heavy lifting?  UBC is geared to get you stronger and more technical in your Olympic Weightlifting.  See how we accomplish this.

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Member Of the Month

These Undies have got it all!  Commitment, Standards, Professionalism, Drive and Community!  They bring so much to our CrossFit family and devote themselves to being the best they can be as CrossFitters and individuals.  Want to become better at CrossFit and life in general?  Aspire to be more like these people

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  • "Standards, Professionalism, Commitment, Results. These aren’t just words to Coach Zac Wilson at Crossfit Undeniable; they are the ideals that underlie what he along with the rest of the coaches bring to the gym every day. I really appreciate their professionalism, their commitment to high standards, their corrections and tips and all they do to help me see results."
  • "Love the feeling of accomplishment that working with this crew gives me. The members and coaches are super supportive in getting you your ultimate workout and accomplishing more than you thought you could do!"
    Kris Saprano
  • "This is a quick "thank you" for letting me drop in, unannounced, to workout with my daughter yesterday. Great workout and adjustments for my limitations. Glad she now has a box family of her own!"
    Rhonda Rasnick
  • "The best part of my day is when I walk through the doors to Crossfit Undeniable. The coaches are always helpful and the community is second to none. I have found a home with a group of folks that are supportive and coaches that always go to the extra mile to help and motivate."
    Brian Saprano
  • "I've worked out at a lot of gyms over the years, but I've never found a better fitness experience than CFU creates! Different every single day, CrossFit works out your entire body and builds your strength, fitness, and confidence faster than you would believe. No matter your current fitness level, the CFU coaching staff works incredibly hard to make the experience fun, safe, and challenging! Don't start tomorrow...come in today!"
    Stuart Erickson
  • "Crossfit Undeniable is the best Crossfit Box in Denver!"

    Kristin Jolly