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Koa Fitness

5 ★★★★★ 30 Google reviews · Muay thai gym in Newark, California

Muay Thai gym Kids & teens Fight team

Plan your first class

  • Kids & youth classes kids and youth muay thai classes — built around discipline, focus, and confidence
  • 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 koafitnesscenter.com — book classes and see the live schedule
  • Phone +1 510-498-8889

Hours

Monday 1–8:30 pm
Tuesday 1–8:30 pm
Wednesday 1–8:30 pm
Thursday 1–8:30 pm
Friday 1–2 pm, 5–7 pm
Saturday 10 am–12:30 pm
Sunday 12–2 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 Koa Fitness, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Muay Thai 3 mentions

“My son loves this place and coaches are awesome.”

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🥊 Sparring 6 mentions

“They have open sparring twice a week and there are some active amateur fighters training here so the sparring is good and technical.”

All gyms that run sparring →

🤼 Clinch

“The MT instructor teaches traditional MT which incorporates elbows, knees, and clinch.”

All gyms that run clinch →

🏆 Fight Team 4 mentions

“They have open sparring twice a week and there are some active amateur fighters training here so the sparring is good and technical.”

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🛡️ Self-Defense

“They will also offer special guest seminars such as self defense!”

All gyms that run self-defense →

Other martial arts here

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

🦵 Kickboxing 2 mentions

“They offer many different disciplines such as Muay Thai, Dutch Kick boxing, Boxing, Ju Jitsu, Judo, Wrestling, and even Strength & Conditioning.”

Other gyms that also teach kickboxing →

🥊 Boxing 10 mentions

“They know their stuff when it comes to Muay Thai and boxing, but what really sets them apart is how patient and understanding they are.”

Other gyms that also teach boxing →

🥋 Brazilian Jiu-Jitsu (BJJ)

“I met the instructor Will who was super friendly and I proceeded to step on the mats for the Brazilian Jiu-jitsu class.”

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

🤼 Judo

“They offer many different disciplines such as Muay Thai, Dutch Kick boxing, Boxing, Ju Jitsu, Judo, Wrestling, and even Strength & Conditioning.”

Other gyms that also teach judo →

🤸 Wrestling

“They offer many different disciplines such as Muay Thai, Dutch Kick boxing, Boxing, Ju Jitsu, Judo, Wrestling, and even Strength & Conditioning.”

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 30 Google reviews — in their own words.

🧑‍🏫 expert, authentic coaching 10 mentions

“Of course he's not the only instructor at KOA, there are so many great instructors who I would also love to write about but I'm already writing more than I can handle.”

🌱 welcoming to beginners 4 mentions

“I had a great time meeting the team who were all so friendly and welcoming which I loved.”

🤝 no-ego, friendly gym 19 mentions

“Beautiful facility, super friendly staff and team, I had a wonderful experience here and recommend it to anyone in the area.”

📘 real technique & fundamentals 8 mentions

“Every instructor is patient, they're there to push you to your limit and work with your technique no matter what level you are.”

🔥 killer workout & conditioning 6 mentions

“I have been training for almost five years and I learned something new, in addition I got a very challenging workout from the instructor.”

🥊 legit sparring & fight team 12 mentions

“They have open sparring twice a week and there are some active amateur fighters training here so the sparring is good and technical.”

From the reviews

I've been doing the boxing and muay thai here for almost 9 months now and it's been great. The coaches are all knowledgeable and the staff is very helpful/supportive. I mainly take the boxing class so I'll speak more about that. There are boxing classes for all age groups and skill levels.

★★★★★ — Gian, Aug 2023

Review of Muay Thai Only. This is one of largest gyms in the bay area. The facility is kept clean and all the equipment is also well maintained. The staff are friendly and informative. MT sparring is available almost every day.

★★★★★ — Alex, Jun 2022

The KTA CrossFit program here is very well run, and I would recommend it to anyone. The entire coaching staff is highly knowledgeable and provides a great environment.

★★★★★ — Lawrence, Feb 2022

I trained in Muay Thai at this gym for about six months, and honestly, it was one of the best decisions I’ve ever made. The coaches—Master Anh, Coach Ron, Coach John, and Coach Angelo—are amazing.

★★★★★ — Pranil, Jan 2025

Excerpts from public Google reviews. Read all 30 reviews →

Your first muay thai class at Koa Fitness

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 Koa Fitness

Located in Stevenson Station, 5757 Stevenson Blvd, Newark, CA94560

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.