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Lost Boys Jiu-Jitsu & Muay Thai

5 ★★★★★ 17 Google reviews · Muay thai gym in Arcata, California

Muay Thai gym Kids & teens Fight team

Plan your first class

  • Kids & youth classes kids and youth muay thai classes (ages 7–14) — 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 lostboysbjj.com — book classes and see the live schedule
  • Phone (707) 388-3111

Hours

Monday 9 AM–12 PM, 5–9:30 PM
Tuesday 5–8:30 PM
Wednesday 9 AM–12 PM, 5–9:30 PM
Thursday 5–8:30 PM
Friday 4–8:30 PM
Saturday 10 AM–2 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 Lost Boys Jiu-Jitsu & Muay Thai, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Muay Thai 17 mentions

“From the moment I walked into the door to inquire about the kids class, I knew I was in the right place.”

All gyms that run kids muay thai →

🏆 Fight Team 2 mentions

“He used to be afraid to compete with other kids in sports, and hated going to school.”

All gyms that run fight team →

🛡️ Self-Defense

“If you want your kids to learn self control and self defense, this is the place to be.”

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 Lost Boys Jiu-Jitsu & Muay Thai — mined from their reviews and the gym's own info.

🥋 Brazilian Jiu-Jitsu (BJJ) 12 mentions

“Lost Boys BJJ houses some of the best teachers and masters of BJJ that Humboldt has to offer, and if their talent is any indication, the world.”

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

🏟️ MMA

“If your considering jiujitsu, muay thai, or mma you will love coming here.”

Other gyms that also teach mma →

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 17 Google reviews — in their own words.

🤝 no-ego, friendly gym 6 mentions

“The coaches at Lost Boys have created a supportive and inspiring environment where my son can thrive.”

📘 real technique & fundamentals 3 mentions

“During this time, he's not only emerged victorious from multiple tournaments, but he's also undergone a remarkable transformation.”

🥊 legit sparring & fight team 2 mentions

“He used to be afraid to compete with other kids in sports, and hated going to school.”

From the reviews

From the moment I walked into the door to inquire about the kids class, I knew I was in the right place. The instructors were able to naturally bond with my son right away. They know how to get down on his level, be a positive influence, and make Jiu-jitsu fun.

★★★★★ — Robert, Apr 2019

I took a few Jiu Jitsu classes at Lost Boys! Its a humble dojo, kind of a hidden gym!. I picked up several new techniques.Although I didn't take the Muay Thai class. I like this place a lot! if your in the area.. check them out!

★★★★★ — Aye-1, Feb 2021

My son has dedicated the past two and a half years to training at Lost Boys. During this time, he's not only emerged victorious from multiple tournaments, but he's also undergone a remarkable transformation.

★★★★★ — Kerry, Nov 2024

Great great environment, wonderful kids classes and, adult classes. A family feel, nicest people in there. If your considering jiujitsu, muay thai, or mma you will love coming here. Beginners get wonderful support and warm welcomes!!

★★★★★ — Tyra, Mar 2019

Excerpts from public Google reviews. Read all 17 reviews →

Your first muay thai class at Lost Boys Jiu-Jitsu & Muay Thai

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 Lost Boys Jiu-Jitsu & Muay Thai

5000 Valley W Blvd #8, Arcata, CA95521

Get directions Instagram · Facebook

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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.