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Foundry Jiu Jitsu

5 ★★★★★ 100 Google reviews · Muay thai gym in Gaithersburg, Maryland

Muay Thai gym Free trial Beginners welcome Kids & teens Fight team

Plan your first class

  • Free trial or intro class most gyms welcome new members with a free trial or intro class — check their site or give them a call to book your first session
  • Beginner-friendly all levels welcome, including total beginners — you don't need to be fit or have any experience to start
  • Kids & youth classes kids and youth muay thai classes — built around discipline, focus, and confidence
  • Fight team a competition team for members who want to test themselves as amateur fighters
  • Today see hours ·
  • Website & schedule thefoundrybjj.com — book classes and see the live schedule
  • Phone (240) 751-5311

Hours

Monday 6:30–9 AM, 12–2 PM, 3–10 PM
Tuesday 7 AM–2 PM, 4–10 PM
Wednesday 7 AM–2 PM, 3–10 PM
Thursday 7 AM–2 PM, 4–10 PM
Friday 7 AM–2 PM, 3–9 PM
Saturday 7:30 AM–4:30 PM
Sunday 9 AM–12 PM

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

The classes they run

Muay thai classes on the schedule at Foundry Jiu Jitsu, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🌱 Beginner Muay Thai 2 mentions

“Whether you're a beginner or a higher belt sharpening your game, I highly recommend this place.”

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🧒 Kids Muay Thai 12 mentions

“Before joining I did my due diligence and researched all of the other schools and attended free trial lessons for me and my kids.”

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Teen Muay Thai 2 mentions

“The kids program has been amazing for my teen boys and there are kids at every age, size and level from small to teens for each kid to be challenged to grow.”

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🏆 Fight Team

“Professor Felipe teaches such high level bjj in a way that can be applied by the everyday enthusiast or someone that wants to compete.”

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🛡️ Self-Defense 2 mentions

“Whether you're interested in competing or simply learning self defense - I recommend them.”

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Other martial arts here

Muay thai gyms are usually multi-discipline. Here's what else members mention training under the same roof at Foundry Jiu Jitsu — mined from their reviews and the gym's own info.

🥋 Brazilian Jiu-Jitsu (BJJ) 21 mentions

“I truly cherished my experience there and would recommend this gym to anyone in the area, from someone looking to start BJJ to an experienced practitioner.”

Other gyms that also teach brazilian jiu-jitsu (bjj) →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want BJJ, boxing, or MMA alongside muay thai, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 100 Google reviews — in their own words.

🧑‍🏫 expert, authentic coaching 6 mentions

“After a long time in the field of athletics, nothing compares to the environment created by the world class instructors and coaches here.”

🌱 welcoming to beginners 11 mentions

“The first class I attended with my wife, we were greeted by the instructor as well as several of the women who had been training there for years.”

🤝 no-ego, friendly gym 27 mentions

“The coaching team is friendly, professional, extremely knowledgeable, and goes beyond to solidify technique to all students.”

📘 real technique & fundamentals 5 mentions

“All the instructors are active high level competitors who now how teach the basics as well as the more modern advanced BJJ techniques.”

🧒 strong kids program 4 mentions

“Training at Foundry has been a life changing experience; my kids confidence has skyrocketed, and bullying is no longer an issue for any of them.”

🧼 clean, well-equipped gym 10 mentions

“The facility itself is always very clean and well-maintained, which creates a great and safe atmosphere for learning and training.”

From the reviews

The atmosphere and instruction is top notch. All the instructors are active high level competitors who now how teach the basics as well as the more modern advanced BJJ techniques. Each instructor is friendly, personable and willing answer questions and help in any way they can.

★★★★★ — Nicholas, Jun 2022

The Foundry, aka, Alliance Maryland is hands down the best BJJ school in the area. Before joining I did my due diligence and researched all of the other schools and attended free trial lessons for me and my kids.

★★★★★ — Steven, Mar 2021

If you are looking for a fantastic place to train Jiu Jitsu, this is it! I have been training at foundry for 2.5 years. The first class I attended with my wife, we were greeted by the instructor as well as several of the women who had been training there for years. Right away the environment was welcoming.

★★★★★ — Carolyn, Mar 2021

Joining this gym was a life changing decision for me, and my family. The instructors are world class champions who also happen to be the some of the kindest and most generous people you will ever meet. The students help create culture that is equal parts challenging, competitive, rewarding, and fun.

★★★★★ — Mike, Jun 2022

Excerpts from public Google reviews. Read all 100 reviews →

New to muay thai? Start at Foundry Jiu Jitsu

Foundry Jiu Jitsu comes up as a beginner-friendly gym, going by their listing and members’ reviews. If you've never thrown a punch or a kick, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit to start — you get in shape by training, not before it, and coaches scale the conditioning to you. Second, you won't be thrown into sparring — reputable gyms build fundamentals (stance, footwork, and the basic strikes of the "art of eight limbs") for weeks before any contact, and sparring stays optional. Third, all levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most gyms are happy to let you watch or try a class first, so reach out before you commit.

Check beginner classes on their site

Your first muay thai class at Foundry Jiu Jitsu

Nervous about walking into a muay thai gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling the basics on pads and bags — not fighting. Rest whenever you need to; no one will bat an eye. What to wear: shorts or athletic wear and a t-shirt; you'll train barefoot on the mats. What to bring: water and hand wraps if you have them — many gyms lend gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves, wraps, a mouthguard, and shin guards. Sparring is optional and comes later, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

Muay thai is a contact sport. Ease in, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Foundry Jiu Jitsu

7 Metropolitan Ct #3, Gaithersburg, MD20878

Get directions

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.