Heretic CrossFit

$$ • Fitness Center, Interval Training Gyms, Gym

19200-D Chennault Way, Gaithersburg, MD 20879

About Heretic CrossFit

Heretic CrossFit is a fantastic gym that offers challenging yet rewarding workouts in a fun and motivating environment. The members are awesome and the coaches are great at pushing and supporting everyone to become stronger and more physically capable. It's a clean, well-run gym with a great community.

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Reviews for Heretic CrossFit

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  • Mar 2026

    As a 50-year-old with zero CrossFit experience, walking into a gym during the 2026 CrossFit Open could have been intimidating but it was the complete opposite at this place. Everyone was welcoming, introduced themselves, and even asked about which class I was attending. That small gesture really stood out.

    I’m currently in my second week of 1:1 fundamentals with Coach Mike, so I’m not yet in the regular group classes. Even so, the vibe and culture inside those walls already have me excited for the day I get to work out alongside this community.

    Now a few words about the fundamentals sessions themselves. I’ve completed three so far, and...read full review

  • Dec 2025

    I started CrossFit as a complete beginner with no prior training experience, and after completing the Couch to CrossFit program at Heretic CrossFit, I couldn’t be happier with the results. The level-method programming makes it easy to scale workouts to your ability while providing clear benchmarks for tracking progress.

    Classes are capped at 12 members, so they’re never overcrowded, and the coaches provide plenty of one-on-one attention. Personal training sessions are also available for anyone looking for more individualized coaching. The coaches are knowledgeable and supportive, and the community is incredibly welcoming and encouraging, especially...read full review

  • Dec 2025

    Like all of the best CrossFit gyms, this one is more than just a place to workout. Community and camaraderie are what separate Heretic from chain gym locations. Most people that start a fitness program with a typical gym membership end up quitting because they lack coaching, accountability, and encouragement, all core components of Heretic. All you have to do is show up! 💪

Hours

Monday: 5 - 7AM
4:30 - 6:30PM
12 - 1PM
Tuesday: 12 - 1PM
6 - 7AM
4:30 - 6:30PM
Wednesday: 12 - 1PM
4:30 - 6:30PM
5 - 7AM
Thursday: 6 - 7AM
12 - 1PM
4:30 - 6:30PM
Friday: 4:30 - 6:30PM
12 - 1PM
5 - 7AM
Saturday: 9 - 10AM
Sunday: 10AM - 12PM

Tips

1:1 sessions available accepts credit cards good for kids street parking, private lot parking wheelchair accessible gender-neutral restrooms open to all bike parking

Location

19200-D Chennault Way, Gaithersburg

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