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The Lair Jiu Jitsu
5 ★★★★★ 41 Google reviews · BJJ gym in Glendora, California
Affiliated academy — reviews and the gym's own info point to a recognized BJJ lineage or affiliation (think Gracie Barra, 10th Planet, Renzo Gracie, Alliance, Atos or Checkmat). If lineage matters to you, ask which affiliation the academy belongs to and under whom the head instructor earned their black belt.
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 BJJ classes (ages 3–16) — built around discipline, focus, and confidence
- Women's classes dedicated women's BJJ classes — a welcoming space to train and start out in
- No-gi no-gi grappling classes — training in a rashguard and shorts, with faster scrambles and a natural bridge to MMA
- Open mat open-mat rolling sessions for members to practice live — always optional and at your own pace
- Competition team a competition team for members who want to test themselves at tournaments
- Today see hours ·
- Website & schedule thelairjj.com — book classes and see the live schedule
- Phone (626) 587-3690
Hours
| Monday | 6–11:30 AM, 3:30–8:30 PM |
| Tuesday | 6–11:30 AM, 3–8:30 PM |
| Wednesday | 6–11:30 AM, 3–8:30 PM |
| Thursday | 6–11:30 AM, 3–8:30 PM |
| Friday | 4–8 PM |
| Saturday | 9 AM–12:30 PM |
| Sunday | 9 AM–12 PM |
The classes they run
“I take my son here to learn how to improve his Jiu Jitsu game and Coach Mike always delivers and his instructions are very effective.”
“I am not local however I trained under Mike in the past and must say he will give you the pieces to become a top-tier competitor, or just high-level skills if you are a hobbyist.”
“Whether you would like to learn self-defense, competing, or improving your physical/mental health, The Lair is the place to go.”
“From the first time I went to a class here I felt welcomed and comfortable.”
Other martial arts here
“I have a nikyu rank in judo and wrestled collegiately and Mike still beats me up in a kind way (even though he doesn't have to).”
“He has a wrestling background and is a grappling beast⚡ I have yet to train at his new school due to my work schedule but I've been learning from him since around 2013.”
“He never seemed to be happy with his previous Karate School.”
What members say
“Professor Mike Flach is a great man and makes everyone feel like family when you walk through those doors.”
“The culture here is positive and welcoming—everyone trains hard but with control and mutual respect.”
“At The Lair you will be pushed to be the best version of you and you will feel like you are training with family.”
“Coach Mike is a highly skilled instructor who pays close attention to detail, which makes a big difference in refining technique.”
“Also there’s a thriving kids program if you have some young one’s who want to get started on the mats as well.”
“going up and down stairs is about as “active” as it got) to losing over 50 lbs, getting a medal at a local competition and making some great friends on and off the mat.”
From the reviews
Mike has professional MMA/Combat Jiujitsu experience. He has a wrestling background and is a grappling beast⚡ I have yet to train at his new school due to my work schedule but I've been learning from him since around 2013.
Awesome gym. Mike is a great teacher that actively competes on the biggest platforms in jiu-jitsu. I am not a member of this gym. I am not local however I trained under Mike in the past and must say he will give you the pieces to become a top-tier competitor, or just high-level skills if you are a hobbyist.
This gym provides top of the line training hands down. I take my son here to learn how to improve his Jiu Jitsu game and Coach Mike always delivers and his instructions are very effective. We both learned a lot from him. He is the coach who got me and my son into the world of martial arts.
This place is a really fun gym. The head coach and owner Mike Flach along with coach Jeremy are very welcoming. Mike hit me with a sick arm drag to a butterfly sweep sequence. Jeremy got me with a bunch of smooth arm trap sweeps. I had a great time training with them. Thank you for the rolls.
New to BJJ? Start at The Lair Jiu Jitsu
The Lair Jiu Jitsu comes up as a beginner-friendly gym — noted on their own site. If you've never rolled or set foot on a mat, 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 or flexible to start — you get in shape by training, not before it, and coaches scale the intensity to you. Second, you won't be thrown into hard rolling — reputable gyms build fundamentals (positions, escapes, and basic submissions) for weeks, live rolling eases in gradually, and tapping early keeps every roll safe. 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, and leave your ego at the door. Most gyms are happy to let you watch or try a class first, so reach out before you commit.
Your first BJJ class at The Lair Jiu Jitsu
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.
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