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Barbell Weights

Semper Strong has been changing lives since we were established in 2014. We believe that fitness and athletics are a lifestyle leading to success in all aspects of life.

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Opening Hours

Mon - Fri: 5am - 10pm

Saturday: 8am - 10pm

Sunday: 8am - 11pm

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"You can't move mountains if you don't move yourself."

The elite team at Semper Strong has the knowledge and skill that will separate you from the pack and create that ‘semper strength’ physically and mentally.


Team Training

Semper Strong team training services elementary-aged athletes to collegiate leveled athletes and everything in between. Athletes are consistently evaluated and programs are developed based on the needs of the team as a while. The camaraderie built through goal achievement of the group leads to the understanding of increased productivity as an individual and as a group resulting in performance gains on the field and court.


Success Stories

"Work hard in silence. Let success be the noise." 

The results of the athletes speak for themselves. Read and view some of the testimonials below. 

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Semper Strong Programs

We believe in teaching athletes
to own their own program and
progress enhancing their
growth on all levels: athletically,
academically, and mentally.


HIIT Classes

This is a true fitness hybrid incorporating all types of training. This class combines speed and agility, functional movements, TRX, and balancing your weaknesses. Own your own program by understanding the power of goals! Get inspired, stay accountable and before you know it you will be demonstrating the amazing physical and mental commitment far above the norm!


Sports Performance Classes

Sports performance training classes target the whole athlete in all aspects of their game.
Our program consists of enhancing the sports specific movements of each individual athlete. We focus on injury prevention balancing the muscle groups often neglected developing the necessary strength to maximize the potential of the athlete.


Indoor Cycling

Bring your own bike and trainer classes offered all off-season. Build your bike fitness, gain power and GRIND out a quality workout leading to optimal performance outdoors!


Kids Classes

Developing skills and coordination through fun obstacles and activities. Improving our children physically, mentally, and socially through movement.

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Nonprofits & Activism

Katy Forman, Semper Strong + P.S. I Love You Day: Intersection of Mental Health, Fitness & Education

Balance & Core #instafit #pushups #semperstrong #longislandfitness #longislandgym #hiitworkout #fitnessmotivation

Team Training ⚾️NY Storm @semperstronggym #nystorm #baseball #TrainHard #teamwork #athlete #Fitness #dedication #committed

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Get In Touch

751-14 Koehler Ave Ronkonkoma NY United States 11779

(516) 523-6217

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