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.
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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!
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Why Members Love
Underground Athlete
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Come train at the best gym in Fairfax, VA. Push yourself, meet great people, and start with a free intro.
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COMMON QUESTIONS & ANSWERS
Semi-private training combines the personalized approach of personal training with the energy and support of small group training. Unlike traditional group fitness, where everyone follows the same workout, our semi-private training in Fairfax provides a customized plan for each individual while training alongside others in a supportive, coach-led environment.
Not at all! Despite our name, we primarily train adults (35-55) looking to build strength, improve mobility, and stay injury-free. While we originally worked with competitive athletes, our focus now is on helping everyday people move better and feel their best.
Our group classes are designed to complement semi-private training and include a mix of:
– Strength-focused classes to build muscle and improve movement quality
– HIIT and conditioning sessions for endurance and fat loss
– Mobility and recovery work to keep you feeling great
With flexible scheduling and expert coaching, our fitness classes in Fairfax help keep training fun, challenging, and effective.
Yes! We believe fitness is about more than just workouts—it’s about building connections and having fun. We host community events like happy hours, pickleball, and axe throwing, giving members a chance to connect outside the gym. Our supportive environment keeps training fun, engaging, and social!
We offer limited youth training:
– Ages 10-14 can join occasional small group sessions (schedule announced weekly).
– High school athletes (16-18) are typically integrated into semi-private training.
If you’re interested in youth training, contact us to see if we have an active session available!
Our 5,500 sq. ft. facility includes:
– A strength zone with barbells, kettlebells, dumbbells, and squat racks
– A performance turf area with sleds, rowers, bikes, and conditioning tools
– Recovery tools like Normatec boots, massage guns, and foam rollers
Showers and changing rooms for your convenience
We’re at 3150 Spring Street, Fairfax, VA 22031, near Fairfax Circle, between the Chick-fil-A and Davidson dealership. Nutley Street Metro Station is nearby, and we offer free parking for all members.
Yes! We provide habit-based nutrition coaching to help you fuel your body for success. Through our training app, we offer:
– Simple meal strategies and tracking tools
– Weekly habit-building exercises
– Accountability from our coaching team
Nutrition support is available as part of one-on-one coaching or online training.
Yes! Many of our members continue training with us remotely through our online personal training program. You’ll get:
– A customized training plan tailored to your home or gym setup
– Coaching support and feedback via our training app
– Access to video demonstrations and progress tracking
Getting started is simple! Just follow these three steps:
1. Book a Free Strategy Session – Meet with a coach to discuss your goals.
2. Get a Personalized Training Plan – We create a program that fits your needs.
3. Start Training with Expert Coaches – Train in our semi-private sessions or join our group classes to get stronger, move better, and feel great!
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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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