Petaluma's judo club since 1970.

Traditional judo for kids and adults, ages 6 and up. No experience needed, and you can come watch a class first.

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What is judo?

An Olympic martial art founded in Tokyo in 1882 by Jigoro Kano. You throw, pin and control a partner with balance and leverage rather than strength. There's no punching or kicking.

Portrait of Dr. Jigoro Kano

Dr. Jigoro Kano

An educator who studied several schools of jujutsu and founded judo in Tokyo in 1882.

柔道

Judo: the gentle way

The two main principles of judo

Kano built judo on two ideas. Everything you learn on the mat comes back to them.

Sensei Henry laughing with students on the mat in Herzog Hall

精力善用

Seiryoku Zenyo

Maximum efficiency

Use the least strength necessary, and let timing do the work.

Sensei Henry demonstrating a hold on a smiling student

自他共栄

Jita Kyoei

Mutual welfare and benefit

You can't learn alone, so you look after your partner.

Our schedule and fees

No experience needed. Kids, teens and adults train together, ages 6 and up. Mondays by appointment.

Location

Herzog Hall

175 Fairgrounds Drive, Petaluma

Get directions

    How to start

    1. Students lined up at the edge of the mat watching a practice match

      Come watch or try a class.

      No appointment and no cost. Talk to an instructor before or after.

    2. The DeLeon Judo Club sign-up table at an event

      Register with Parks & Rec.

      Search "Judo" in their online catalog, or go to their office.

    3. Class group photo on blue mats, with children in white gi seated in front and black belts standing behind

      Wear athletic clothes.

      Nothing with zippers or buttons. We'll help you get a gi when you're ready.

    What we teach

    The Kodokan curriculum, the same one taught in Tokyo. Everyone starts by learning to fall.

    • Students lying on the mat practising a breakfall

      Ukemi — falling safely

      The first skill every student learns. Nobody is thrown before they can land.

    • A judoka sweeping a partner off the mat, mid-throw, at a demonstration while black belts watch

      Throws & groundwork

      Hip throws, foot sweeps and shoulder throws, plus pins, turnovers and escapes.

    • Two judoka practising on the mat while black belts watch

      Randori, kata & etiquette

      Free practice with a partner, the traditional forms, and the manners that go with them.

    Taught by national-level black belts.

    • Sensei Henry laughing during class

      Sensei Henry Kaku

      6th dan, head instructor

    • Sensei Davin in a white gi with the DeLeon Judo Club patch, standing outdoors in sunglasses and looking into the distance

      Sensei Davin Tillman

      5th dan, assistant head instructor

    Other black belts help out and hold clinics. Guest instructors from other judo schools and disciplines come through too.

    Meet our instructors
    Sensei Henry laughing on the blue mats while students practise behind him

    About the club

    Jim Santiago DeLeon founded this club in Petaluma in January 1970. When he retired in 2007, Sensei Henry Kaku took over as head instructor. Many of today's instructors first stepped on the mat as children. Sensei Davin started here at age 5 in 1992, and he's now our assistant head instructor.

    We're a 501(c)(3) non-profit, run entirely by volunteer instructors. Class fees are collected by Petaluma Parks & Recreation and go toward mat time, equipment and insurance, which keeps judo affordable for Petaluma families. We do this because we love judo and want to pass it on.

    Our affiliations

    Rank earned here counts anywhere.

    A young student bowing at the edge of a red mat
    Two young judoka smiling up at the camera from a pin on a blue mat
    Three black belts on a blue mat facing a line of students along the wall of a wide hall
    Club members in blue and white gi lined up for a photo, two of them in leis holding certificates and one holding a framed portrait

    Come watch a class this week.

    No appointment, no experience, no cost. Tuesdays and Thursdays at 5:30 pm — stay and watch, or step on the mat.