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    CrossFit

    Personal Training

    CrossFit Kids

    Competitors

    Legends

    Demand More From
    Your Fitness Program

    Small Class Size

    You deserve individualized coaching, a team atmosphere, and results. We cap our classes at 12 athletes per session to deliver on this promise.

    World-Class Coaching

    You have untapped potential and will thrive with professional coaching. Our coaches have a track record of helping athletes of every ability succeed.

    100% CrossFit

    We believe in the CrossFit methodology. We don’t sacrifice variance in our programming, water it down, or skip steps. As a result, you’ll find performance and health.

    Motivated People Only

    You want to be part of something bigger than yourself. We believe in hard work, dedication, responsibility, and the power of our community.

    Upcoming Events

    World's Toughest Mile

    Join CrossFit Roots for the World’s Toughest Mile right here in Boulder on June 13th!

    Email [email protected] for a Member Only 15% Discount Code!

    The workout:
    • 400m burpee broad jump
    • 400m walking lunge
    • 400m bear crawl
    • 400m run

    The vibe: “True transformation doesn’t come from comfort zones.” And slip and slides. There will be slip and slides at the event too! And saunas, prizes, and tons of awesome energy!

    Learn More and then email [email protected] to let us know you’re IN.

    Athlete Spotlight

    Austin Moss!

    Austin joined Roots in January of 2024. From losing weight, adding muscle, significantly decreasing body fat, moving from scaled workouts to Rx as the norm, and making many friends along the way, Austin has lived the CrossFit experience to a T. Tune in to learn about what he’s done the past two years to drive his health and performance forward as well as his pet peeve!

    Why Roots?

    • Can’t wait to get back to CrossFit Roots. Everything about the box is exceptional; coaching, class offerings and the facility. Professionally Roots aims for the highest standards. Can’t leave out the caring community they have created and nurtured.

      Patricia Gibson
    • Have been going to this gym for many years now. Always welcoming and the coaching is consistently great. If you’re looking for high quality and to actually learn while getting fit, come to Roots!

      Alix Veznia
    • Incredible gym, incredible people. So impressed with the quality of workouts and education – their focus really is on meeting people where they are and finding ways to improve and challenge yourself at every level.

      Peanut Krell
    • The coaches are exceptional, the vibe and camaraderie are great. I have been to several boxes and this is the top of the top.

      Simone Nicolò
    • Absolute top tier coaching in a fantastic facility with an amazing community. This is the place.

      Nick Ralston

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    5311 Western Avenue Suite 101, Boulder, CO 80301

    Call us:
    303-578-8455