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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

    Memorial Day Murph Event

    Each year, CrossFit affiliates around the world do the Hero workout Murph in memory of Navy Lieutenant Michael Murphy who was killed in Afghanistan in June of 2005. CrossFit has had a long relationship with the military and has honored service members who have made the ultimate sacrifice through Hero workouts.

    On Sunday, May 25 we will hold our annual Murph event.

    Doors open at 7:15am for the National Anthem and kickoff. Heats will go at 8:00, 8:25, and 8:50am so come early to warm-up! Sign up in Zen Planner to reserve your spot.

    We will have various beginner and scaled options for athletes. As always, just show up!

    We’ll also be hosting our traditional healthy breakfast potluck so bring something to share! But, seriously, keep those cinnamon rolls and sugar-laden foods at home (or better yet, just leave them at the grocery store).

    This year our Memorial Day fundraising efforts are supporting Allegiance Ranch and Equine Rescue based out of Erie, Colorado. All of the proceeds from our Memorial Day shirt will go to this great organization and we thank you for also considering a donation.

    Athlete Spotlight

    Amy Jo, 58 years young

    In 2014, at the age of 48, Amy Jo joined CrossFit Roots after moving from Atlanta. An athlete at heart, CrossFit was new to her. She used multiple bands for pull-ups, could not kick up to a wall, and weightlifting was a new endeavor for her. Fast forward to 2024, and Amy Jo finished 14th in the world at the Masters CrossFit Games in the 55-59 year old age category. She completed bar muscle-ups, walked 80 feet on her hands, and front squatted 205 pounds. Learn more about Amy Jo, her work ethic, her career, and her family.

    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