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66 JIU-JITSU

5 ★★★★★ 25 Google reviews · Muay thai gym in Flagstaff, Arizona

Muay Thai gym Free trial Beginners welcome Kids & teens

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
  • Women's classes dedicated women's muay thai classes — a welcoming space to train and start out in
  • Today see hours ·
  • Website & schedule 66jiu-jitsu.com — book classes and see the live schedule
  • Phone (928) 607-2448

Hours

Monday 12–1 PM, 4:15–8 PM
Tuesday 12–1 PM, 4:15–8 PM
Wednesday 4:15–8 PM
Thursday Closed
Friday 12–1 PM, 4:15–6:30 PM
Saturday 8:30 AM–12 PM
Sunday Closed

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 66 JIU-JITSU, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🌱 Beginner Muay Thai 4 mentions

“The environment that Mario creates at his school is great for first timers and for people who have been consistently training for years.”

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🧒 Kids Muay Thai 5 mentions

“My son goes to open mat night and it’s free and he always gets a great workout in and the staff is AWESOME!”

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💪 Women's Muay Thai

“He offers classes for women only and kids as well!”

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🛡️ Self-Defense 3 mentions

“As an added plus, there is an emphasis on realistic self-defense for beginners and a padded wall to practice on.”

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🔓 Open Gym 3 mentions

“Additionally, the regulars were always welcoming and happy to give pointers, be it after class or even during the handful of open mats I attended there.”

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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 66 JIU-JITSU — mined from their reviews and the gym's own info.

🥊 Boxing 2 mentions

“You won't find a better value in the monthly dues, especially for an instructor with the same wealth of knowledge in bjj, boxing, wrestling and mma.”

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🥋 Brazilian Jiu-Jitsu (BJJ) 13 mentions

“You won't find a better value in the monthly dues, especially for an instructor with the same wealth of knowledge in bjj, boxing, wrestling and mma.”

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🏟️ MMA 2 mentions

“You won't find a better value in the monthly dues, especially for an instructor with the same wealth of knowledge in bjj, boxing, wrestling and mma.”

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🤼 Judo 4 mentions

“This club also has a judo teacher, and he also loves to teach judo, and he's a great guy as well.”

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🤸 Wrestling

“You won't find a better value in the monthly dues, especially for an instructor with the same wealth of knowledge in bjj, boxing, wrestling and mma.”

Other gyms that also teach wrestling →

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 25 Google reviews — in their own words.

🌱 welcoming to beginners 9 mentions

“Additionally, the regulars were always welcoming and happy to give pointers, be it after class or even during the handful of open mats I attended there.”

🤝 no-ego, friendly gym 11 mentions

“I visited for ten days and him and his students (along with assistant coach Philip) were very welcoming.”

📘 real technique & fundamentals 4 mentions

“I also added some new technique to my arsenal.”

🥊 legit sparring & fight team 3 mentions

“I would say that this is MMA style jiujitsu, which will help you in a real fight, but it also rolls over to competition.”

🧼 clean, well-equipped gym 8 mentions

“Was traveling through the state and wanted to get some training in, everything was clean and everyone was kind and helpful.”

🧠 builds confidence & discipline 2 mentions

“They also focus on self-defense techniques that transition well into competition.”

From the reviews

66 jiujustu is a great place to train. I was on vacation from California and stopped in. I was a bit nervous not knowing anyone but 66JJ was inclusive, and everyone was very welcoming. It felt like I had already trained there for a while.

★★★★★ — Marcos, Sep 2019

5/5 I've trained at most of the gyms in the area. Mario is the only legitimate black belt actively teaching in town as far as I know. You won't find a better value in the monthly dues, especially for an instructor with the same wealth of knowledge in bjj, boxing, wrestling and mma.

★★★★★ — Eric, Oct 2020

Had a fantastic several weeks training nogi at 66 while I was in town. Being still brand new to Jiu Jitsu, it’s always intimidating walking in somewhere new, but 66 ended up a fantastic experience for me.

★★★★★ — Devin, Aug 2025

I've been going here for about 15 months now, and this place is my second family. The owner is Mario, he is a great guy, and truly loves teaching and doing jiujitsu. Mario will teach you everything from takedowns, to ground work, gi, no gi, and more.

★★★★★ — John, Apr 2026

Excerpts from public Google reviews. Read all 25 reviews →

New to muay thai? Start at 66 JIU-JITSU

66 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.

See their beginner class info

Your first muay thai class at 66 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 66 JIU-JITSU

2710 N Steves Blvd #10, Flagstaff, AZ86004

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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.