CrossFit Union Square


Welcome To
CrossFit Union Square!

Powered by Reebok and led by Head of Training Annie Thorisdottir, CrossFit Union Square is a world-class facility located in the heart of Union Square!

More About Our Box


"Oly Concepts"

Snatch Complex
16 Min EMOM
Power Snatch + LowHangSnatch + OHS


Back Squat
4×8 @65%


We’re so sure you’ll fall in love with CrossFit that we’re let you try a FREE Class






    Type your comment or question here
  • This field is for validation purposes and should be left unchanged.

Liability Waiver

I, the undersigned, hereby voluntarily desire to participate in calisthenics and conditioning training and exercise at Intensive Muscle Training Facility (Reebok & CROSSFIT UNION SQUARE) solely for my own enjoyment, exercise and social purposes. In consideration of the foregoing, I hereby release Reebok & CROSSFIT UNION SQUARE, and its officers, agents and employees, and the instructor(s), from any and all claims, suits, judgments, costs and expenses of whatever nature whatsoever, known or unknown, which may arise out of my participation in these classes, specifically including but not limited to claims for injuries and subsequent intervening medical care. I attest and verify that I am physically fit and am at no known risk to participate in these cardiovascular and muscle toning activities.  I further understand and agree that acceptance of this Release form does not in any manner imply acknowledgment or verification by Reebok & CROSSFIT UNION SQUARE of my physical condition and/or ability to participate.  If I am in doubt as to whether my physical condition permits me to participate in these classes, I agree to obtain the approval of my personal physician. I agree to immediately stop my participation in the classes and to notify any Reebok & CROSSFIT UNION SQUARE staff member in the event I feel ill or injure myself. I further understand and agree that notwithstanding the foregoing, Reebok & CROSSFIT UNION SQUARE reserves the right to ask that I cease participating in these classes for any reason, and if that should happen, I agree to do so.

Featured video

Posted on 03/27/2015

Coach Eric takes us through Open workout 15.4 — and the aftermath of some great performances!

Screen shot 2015-03-27 at 11.00.02 AM

Upcoming event

Posted on 01/15/2014

Join us for a grand opening party celebrating New York City’s hottest new CrossFit box!


Featured video

Posted on 01/10/2014

What is CrossFit? Find out from our trainers at CrossFit Union Square.


What is CrossFit

Posted on 10/21/2013

Say hello to a whole new ball game, and what the heck are these muscles I never even knew existed, and why are they sore?

  • Meet the coach

    Annie Thorisdottir

    Annie, a world-renowned competitor who o

  • annie-thorisdottir-featured READ BIO All Coaches
  • Our Sister Boxes

    Experience CrossFit at its highest level. Ran by RhinoCo, this organization...

  • featured_image_sister-boxes READ MORE
  • Our Facilities

    CrossFit Union Square is a world-class CrossFit box located ideally on Southwest corner of Union Square.

  • our-facilities READ MORE
  • Supplements

    Nutriforce Sports offer the most complete line of supplements for CrossFitters.

  • nutrition-feature READ MORE
  • CrossFit_US_Events

    Upcoming event

    Join us for a FREE intro class this Saturday, at 10 am!

    Learn More

  • rob-o-on-the-stone

    Featured blog

    I became hooked on CrossFit in 2010 for many reasons...

    Learn More

  • CrossFit_US_FreeClass_Side2

    Plans And Pricing

    Welcome to CrossFit Union Square!

    Learn More

  • plaeo-feature-small

    What Is Paleo

    It helps to keep the body in a more balanced state...

    Learn More

  • Nutrition

    Nutrition Philosophy

    There are a few lifestyles of eating CrossFit promotes: Paleo

    Learn More

  • Featured_FreeClass

    FREE Class

    CrossFit Union Square is New York City’s premiere CrossFit facility

    Learn More

  • CrossFit_US_ExpressWod

    Our Programs

    This is the meat and potatoes of what we do at RCF Union Square.

    Learn More

  • CrossFit_US_Pride

    Our Culture

    We’re all about looking good and feeling good, getting fitter...

    Learn More


Join our mailing list