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Sampa Brazilian Jiu Jitsu Walnut

5 ★★★★★ 40 Google reviews · BJJ gym in Walnut, California

BJJ gym Kids & teens Competition team

Plan your first class

  • Kids & youth classes kids and youth BJJ classes — built around discipline, focus, and confidence
  • Competition team a competition team for members who want to test themselves at tournaments
  • Website & schedule sampabjj.com — book classes and see the live schedule
  • Phone +1 626-335-4971

The classes they run

BJJ classes on the schedule at Sampa Brazilian Jiu Jitsu Walnut, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids BJJ 8 mentions

“Very legit brazilian instructors and amazing kids class that i watched and had fun before my training.”

All gyms that run kids bjj →

🛡️ Self-Defense

“Sampabjj is a place where you not only can learn quality bjj and self defense but also you can improve as a person.”

All gyms that run self-defense →

Other martial arts here

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

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 MMA, muay thai, or wrestling alongside your BJJ, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 40 Google reviews — in their own words.

🧑‍🏫 expert, high-level coaching 4 mentions

“Renato and Nathan are amazing instructors, very helpful, friendly and their knowledge is second to none!”

🤝 no-ego, friendly academy 10 mentions

“All the coaches here (Mike, Renato, and others) are all really friendly but also teaches kids discipline and respect.”

🧠 builds confidence & discipline 3 mentions

“All the coaches here (Mike, Renato, and others) are all really friendly but also teaches kids discipline and respect.”

From the reviews

Coach Juan is the best. He really pushes us to our limits. The vibes here are very positive and everyone helps each other. Great place to start your BJJ journey.

★★★★★ — Kelvin, Mar 2020

My son started to come here about a month ago and he loves it! All the coaches here (Mike, Renato, and others) are all really friendly but also teaches kids discipline and respect.

★★★★★ — Terry, Apr 2019

Sampabjj is a place where you not only can learn quality bjj and self defense but also you can improve as a person. The staff is really friendly and take care of their students. For adults who want to get fit and kids to grow their personality and motoric skills.

★★★★★ — Martin, Nov 2019

I came from Brasil for holidays and decided to check this place out. Very good instructions and great workout. Very legit brazilian instructors and amazing kids class that i watched and had fun before my training.

★★★★★ — Marco, May 2015

Excerpts from public Google reviews. Read all 40 reviews →

Your first BJJ class at Sampa Brazilian Jiu Jitsu Walnut

Nervous about walking into a BJJ 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 basic positions and escapes with a partner — not hard sparring. Rest whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot on the mats. What to bring: water and a mouthguard if you have one — many gyms lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi (or a rashguard and shorts for no-gi) and a mouthguard. Live rolling eases in gradually, 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.

BJJ is a contact sport. Ease in, tap early and often, 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 Sampa Brazilian Jiu Jitsu Walnut

355 S Lemon Ave Unit l, Walnut, CA91789

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.