Limited Time Only | Founder’s Rate available $165/m unlimited membership at ONE Nation Waltham. Lock in this rate for Life!
Join Now


College Students | Special Full Time College Student Rate only $100 per month for unlimited fitness!

Join Now


Group On-Ramp | Get Started Today! Three-Day Intro Course…Included in Your First Month’s Membership!
Join Now


ONE-X Membership | High energy, fast paced and fun interval workouts…like to sweat? ONE-X is for you!
Join ONE-X


ONE Nation is dedicated to helping you build your best self. Our expert coaches provide the guidance and care necessary for your journey. Our tight-knit community provides the constant support of like-minded individuals of all age and backgrounds. Our world-class programming provides the means to reach your goals. Once you step into our electric atmosphere, you will quickly realize ONE Nation is so much more than just a gym. We invite you to come join us!

– JC del Real, Austin Malleolo, Matt DellaValle
Owners & Partners



CrossFit is ONE Nation’s flagship program. CrossFit is functional fitness that provides amazing results for all ages and genders. Each day, CrossFit will help you become the best version of you.

Kids & Teens

We get young people of all ages off the couch and moving! Whether learning to play through fitness or looking to make the varsity team, ONE Nation can help!


ONE-X is a fast-paced, non-stop and fun fitness experience. If you’re looking to work hard and sweat to high-energy music, then this class is for you.

Corporate Wellness

ONE Nation is the official fitness provider of many local corporations. We offer an array of corporate wellness solutions if interested in bringing a better quality of life and team building to your business.