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Millennia MMA Gym

4.7 ★★★★★ 90 Google reviews · Muay thai gym in Rancho Cucamonga, California

Free trial Beginners welcome Kids & teens Fitness classes 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 (ages 6–10) — built around discipline, focus, and confidence
  • Fitness & conditioning muay thai fitness and cardio classes — a serious workout you can do without ever having to spar
  • Sparring & clinch sparring and clinch sessions for members ready for controlled contact — always optional and coach-supervised
  • Fight team a competition team for members who want to test themselves as amateur fighters
  • Today see hours ·
  • Website & schedule millenniamma.com — book classes and see the live schedule
  • Phone +1 951-596-5583

Hours

Monday 9 am–9 pm
Tuesday 9 am–9 pm
Wednesday 9 am–9 pm
Thursday 9 am–9 pm
Friday 9 am–9 pm
Saturday 8 am–2 pm
Sunday 9 am–1 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 Millennia MMA Gym, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🌱 Beginner Muay Thai 6 mentions

“I have a 7 and 14 year old that prior to here had no experience with jujitsu,wrestling and kick boxing.”

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🧒 Kids Muay Thai 5 mentions

“Great place for kids to learn how to defend themselves and have a great time while learning.”

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🥊 Sparring

“All of the students were cordial and respectful sparring partners.”

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🏆 Fight Team 7 mentions

“Millenia knows what they’re doing when it comes to MMA and competition and they have fighters on high level fight promotions like cage warriors and the UFC.”

All gyms that run fight team →

Other martial arts here

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

🦵 Kickboxing

“I have a 7 and 14 year old that prior to here had no experience with jujitsu,wrestling and kick boxing.”

Other gyms that also teach kickboxing →

🥊 Boxing

“I have a 7 and 14 year old that prior to here had no experience with jujitsu,wrestling and kick boxing.”

Other gyms that also teach boxing →

🥋 Brazilian Jiu-Jitsu (BJJ) 14 mentions

“There’s an upstairs room where they hold their striking/grappling sessions as well as the main room downstairs.”

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

🏟️ MMA 6 mentions

“Grappling in gi, no-gi submission grappling, wrestling, as well as MMA and fundamental striking.”

Other gyms that also teach mma →

🤸 Wrestling 4 mentions

“I have a 7 and 14 year old that prior to here had no experience with jujitsu,wrestling and kick boxing.”

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 90 Google reviews — in their own words.

🧑‍🏫 expert, authentic coaching 3 mentions

“The coaches are amazing and pay attention to detail and technique while teaching,which is really important for safety.”

🌱 welcoming to beginners 8 mentions

“I have a 7 and 14 year old that prior to here had no experience with jujitsu,wrestling and kick boxing.”

🤝 no-ego, friendly gym 10 mentions

“Coach Romie is very nice as well as all of the coaches here, They have all been very welcoming to me.”

📘 real technique & fundamentals 6 mentions

“The owner was kind, the class was excellent with modern technique, and plenty of high quality rolls to round out the class.”

🥊 legit sparring & fight team 11 mentions

“Millenia knows what they’re doing when it comes to MMA and competition and they have fighters on high level fight promotions like cage warriors and the UFC.”

🧼 clean, well-equipped gym 6 mentions

“This facility provides a clean, safe, and professional environment for all to train!”

From the reviews

I am a former Marine and have been training in various locations from Japan, Ft Lenoardwood, to 29 Palms. I do appreciate what I learn from those gyms but none of them compare to Millennia. I have been training here for a year and they have various skills levels which is nice.

★★★★★ — Dominic, Apr 2019

I dropped in for the 7pm class while on business and Millenia was incredibly welcome. The owner was kind, the class was excellent with modern technique, and plenty of high quality rolls to round out the class. The mats and facility were top notch and I couldn't recommend it enough.

★★★★★ — William, Feb 2025

Love this gym. I have a 7 and 14 year old that prior to here had no experience with jujitsu,wrestling and kick boxing. My kids are loving all of it. The coaches are amazing and pay attention to detail and technique while teaching,which is really important for safety.

★★★★★ — Gabrielle, Jul 2021

I was on a short term work assignment looking for a gym. I dropped in for a visit and immediately signed up when I left. I ended up staying for close to a year and could not have enjoyed my stay any more due to this gym. World Class Coaches paired with the most amazing training partners.

★★★★★ — Colin, Jan 2023

Excerpts from public Google reviews. Read all 90 reviews →

New to muay thai? Start at Millennia MMA Gym

Millennia MMA Gym comes up as a beginner-friendly gym — noted on their own site. 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 Millennia MMA Gym

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 Millennia MMA Gym

8423 Rochester Ave #102, Rancho Cucamonga, CA91730

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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.