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challenging workouts with inspiring coaches

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we believe in fitness

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workouts tailored to individuals' ability & fitness level



To transform the way people view fitness and their abilities through challenging limitations that are set by the mind and help our members reach their full potential.


Create a positive community that promotes fitness, health, well-being, and is dedicated to self-improvement.


  •  Foundations Classes

  •  Strength Program

  •  Adult Gymnastics

  •  Kids Gymnastics

  •  Beach Workouts

  •  Daily Group Workouts

  •  340 Hikes

  •  Personal Training

  •  1 on 1 Foundations Classes


Shari Manson

100% worth getting out of bed early. Another great workout this morning, Amazing box with a wonderful community of people. Friendly and helpful coaches. Highly recommend to all!! What a great addition to the island!!

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Ruben Camacho

"At 340 Crossfit, every day is a new challenge and the coaches are excellent. Coach Kevin, Coach Meagan and Coach Gus will get you in shape and push you to get that last rep. I’ve learned that the words “I can’t do that” should never be spoken at 340 Crossfit."

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Michael MacDonald

"Amazing box with wonderful people. We felt very welcome and enjoyed all aspects of being there. Friendly and intelligent coaches plus a super clean facility made this one of our top 3 boxes ever visited. Highly recommend to all!"

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Vaughn Dorado

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"340 Crossfit St. Croix is the best way to get fit and strong not only physically but mentally. All of the time that my wife Regina and myself have spent there has been nothing but uplifting and fun. Even with the hard work it has been a great learning experience and one of the biggest accomplishments of my life."

Also make sure to check out the CrossFit Journal