Important Announcements

CrossFit Kryptonite is now open for personal training and indoor classes. We are also currently running our Fundamentals classes every two weeks for beginners. Please check your ZenPlanner app for each week’s schedule. If you would like to renew your membership, schedule a personal training session or sign up for Fundamentals, please contact us.

Please continue to wear your mask properly during class, ensuring it covers both your nose and mouth. For more information, please read our list of COVID-19 rules.

About Us

Founded in 2010, CrossFit Kryptonite is a functional fitness gym located in Center Moriches, NY. We offer CrossFit classes led by experienced trainers, as well as private personal training sessions for beginners and advanced athletes alike.

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Our Trainers

Our coaches are here to support, guide, and encourage you on your health journeys. In addition to certified personal trainers and CrossFit-certified coaches, our team includes certified weightlifting, gymnastics, and nutrition experts.

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Get Started

We offer functional fitness workouts for the entire population—no matter your age, ability, or experience level. To maximize your experience, we ask all beginners to complete an Introductory Session, as well as our instructional Foundations classes.

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CrossFit Classes
Personal Training
Nutrition Guidance