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Underground Athlete team

The Best Semi-Private Training in Fairfax, VA

More Than a Gym – A Community Built for
Strength & Success

Underground Athlete helps busy adults get stronger, move better, and stay injury-free with expert-led semi-private training.

Free Intro

Train for Strength.
Stay for
the Culture.

What is Semi-Private Training? Located in Fairfax, VA, Underground Athlete is a 5500 sq. ft. training facility offering top-tier semi-private training. Semi-private training allows for the best of both worlds: individualized attention from your trainers and the energy of a small group setting. Our trainers meet you where you are, adjusting workouts to your needs while encouraging and supporting you along the way!

Free Intro
Workout with kettlebell
Man working out on personal training

Why Members Love
Underground Athlete

Testimonials

Why Wait to Be Your Best?

Come train at the best gym in Fairfax, VA. Push yourself, meet great people, and start with a free intro.

Free Intro

Start Your Fitness Journey in

3 Easy Steps

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1
Book a Free Strategy Session
Meet with a coach to discuss your goals, experience, and training preferences.
Woman workout with a coach on personal training
2
Get a Customized Training Plan
Based on your assessment, we create a personalized semi-private training program to fit your needs.
Group training using the kettlebell
3
Train with Expert Coaches
Join our small group personal training sessions, build strength, and achieve results with hands-on guidance.

COMMON QUESTIONS & ANSWERS

Eat Smarter.
Feel Better.
Train Stronger.

Download our free guide to fueling your body for success—from grocery shopping tips to simple meal strategies. Take the guesswork out of nutrition and maximize your results inside and outside the gym.

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