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Club 37 Jiu-Jitsu

5 ★★★★★ 33 Google reviews · BJJ gym in Eau Claire, Wisconsin

BJJ gym Affiliated Beginners welcome Kids & teens No-gi Competition team

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

  • 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 6) — built around discipline, focus, and confidence
  • 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 club37jj.com — book classes and see the live schedule
  • Phone +1 715-529-5361

Hours

Monday 5–9 pm
Tuesday 6:30–8:30 am, 6–9 pm
Wednesday 5–9 pm
Thursday 6–8:30 pm
Friday 6:30–8:30 am, 6–9 pm
Saturday Closed
Sunday 12:30–3 pm

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

The classes they run

BJJ classes on the schedule at Club 37 Jiu-Jitsu, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids BJJ 3 mentions

“They are starting new programs this summer for striking and kids as well which is awesome!”

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💪 Women's BJJ 2 mentions

“Many women training as well which which is nice as a woman who was just starting out.”

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🩳 No-Gi

“They train gi and no gi, and make it such a great experience all around!”

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🥋 Gi

“They train gi and no gi, and make it such a great experience all around!”

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🏆 Competition Team 4 mentions

“As a team we’ve been able to compete successfully at many competitions including IBJJF Worlds in Las Vegas standing on podiums consistently.”

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🌱 Beginners 6 mentions

“Club 37 has more veteran competitors than they have beginners so every session is going to give you a challenge whether you are new or even an experienced grappler.”

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Other martial arts here

BJJ gyms are usually multi-discipline. Here's what else members mention training under the same roof at Club 37 Jiu-Jitsu — 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 33 Google reviews — in their own words.

🌱 welcoming to beginners 9 mentions

“Club 37 has more veteran competitors than they have beginners so every session is going to give you a challenge whether you are new or even an experienced grappler.”

🤝 no-ego, friendly academy 13 mentions

“The Martinek's were welcoming, knowledgeable and fun to train under, thank you for having me and I look forward to coming back and training when I am in the area.”

📘 strong technique & fundamentals 6 mentions

“The coaching has great detail and the students are all welcoming.”

active competition team 5 mentions

“As a team we’ve been able to compete successfully at many competitions including IBJJF Worlds in Las Vegas standing on podiums consistently.”

🧼 clean, well-kept mats 5 mentions

“I visited a few nearby gyms before deciding on Club37 The people are friendly, the space is clean, and the instruction is among the best available.”

💗 welcoming to women 3 mentions

“Many women training as well which which is nice as a woman who was just starting out.”

From the reviews

Club 37 is exactly what a jiu jitsu gym should be. The instruction and training is phenomenal, with curriculum and training methods that are on the cutting edge of the sport. More importantly, the community of people that train there are fun, dedicated, and welcoming.

★★★★★ — Tom, Nov 2022

For someone that was close to 40 years old, I never once thought I would be learning jiu jitsu at my age or enjoying it as much as I have for the last 2 years. Club 37 has been great for me and my kiddo. Awesome atmosphere for entire family.

★★★★★ — Kyle, Feb 2025

An excellent gym located in Eau Claire, WI. An extremely clean training facility with skilled training partners and a coach, Catlon Martinek, whose equally passionate about Jiu Jitsu and functional learning from fundamentals to advanced techniques.

★★★★★ — Nick, Nov 2022

Great place to take my daughter for kids class. She loves it. Coaches are great. Training there as an adult, classes are a lot of fun and everyone is friendly and very helpful. 100% recommend to start sooner than later..

★★★★★ — Phillip, Oct 2025

Excerpts from public Google reviews. Read all 33 reviews →

New to BJJ? Start at Club 37 Jiu-Jitsu

Club 37 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.

Check beginner classes on their site

Your first BJJ class at Club 37 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.

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 Club 37 Jiu-Jitsu

W3450 WI-37, Eau Claire, WI54701

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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.