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A Gym Near Olney That Can Help With Weight Loss & Dieting

short on time?

Personal Training program Near Me In Gaithersburg, Maryland

struggling to lose weight?

needing a plan & accountability?

Check Out Our Gym Near Rockville, MD

stressed out?

Why Heretic CrossFit Is Ranked One of The Best Gyms In Gaithersburg

scared to start?

Personal Training

Group Fitness

Couch To CrossFit

getting started

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Fill out the consultation form to speak with one of our coaches. All consultations are done BY APPOINTMENT ONLY. We will talk about your goals, why you want to achieve them and how we can help. At Heretic, a consultation is just a conversation…not a commitment.



Once you’ve decided Heretic is for you, your next step is our Fundamentals process. This is where you and your coach will design your Fundamentals to get you ready for classes. Our Fundamentals are done on a 1-1 basis so you get the personal attention you need. This is where learning occurs – technique, mobility, healthy eating and much more!



Our memberships are designed to keep you excited about fitness, practice what you learned in your Fundamentals and help alleviate boredom found in a traditional gym. Each membership has PT built in so there’s no up-selling from your coach. You’ll work with your coach to achieve goals and reach new levels of fitness you once thought impossible.

What do people say about us?

  • I’ve been a member at Heretic for close to a year now. The people and culture are amazing – just a bunch of great people working together to motivate each other. I’ve been to several CrossFit gyms in my life and can say that the Heretic crew is welcoming and always quick to make new-comers feel at home.

    Anna S
  • Heretic CrossFit is an inspiring environment. I absolutely recommend anyone serious about living a stronger and healthier life give the methodology & its trainers a chance.

    Maliza C
  • Not all CrossFit gyms are created equal, and Heretic CrossFit proves that. As someone newer to this form of fitness, I not only enjoy learning something new from each session, I can also feel myself getting stronger since I started.

    Najuma P
  • I’ve never felt so at home at a gym! This is unlike any other CrossFit gym I’ve been to.

    Gabby Y
  • If you are looking for a gym, look no further and try it out today! Heretic CrossFit is a terrific gym with great coaches and members.

    Kristen L
Gaithersburg's Top-Rated CrossFit Gym and Fitness Training

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Call us: 301-678-9387

19200-D Chennault Way, Gaithersburg, MD 20879