510 Judo

510 Judo offers Tiny Judo for kids age 3 to 5 and Youth Judo from ages 6 to 16. Tiny Judo includes coordination, strength, and working together with respect and safety in mind. Youth Judo includes strength, coordination, balance, and confidence.

Programs

• Tiny Judo — For kids age 3 to 5 · Develops coordination, strength, and positive skills of working together with respect and safety in mind.
• Youth Judo — From ages 6 to 16 · Kids program develops well rounded, positive kids with amazing skills; learn strength, coordination, balance, and confidence.
• Adults Judo — Adults · For all skill levels from beginner through advanced.
• Judo Fundamentals — Adults · Every Tuesday and Thursday · For beginners; covers how to fall, how to roll, basic footwork and gripping.
• Sport Judo — Adults · Olympic style sport judo rules used at most local and national tournaments, as well as professional international competitions.
• Old School Judo — Adults · Monday nights · Explores alternate rule sets and prepares students for real world encounters where there is no referee to stand you up.
• No Gi Judo — Adults · Judo done without the traditional thick cotton uniform; mixed with other grappling styles, mostly wrestling and Brazilian jiujitsu.

At a glance

• Ages: 3–16 years old

About the provider

510 Judo says its goal is to have fun, get fit, and learn amazing skills, and it describes judo as useful for self-defense, body awareness, and keeping in shape. The leadership team listed on the site includes David Quinonez, Nico Harriman, Aleka Aquinonez, and Alan Aki. The site also says 510 Judo hosted the 2nd Bay Area Judo Championships in 2024 at Pinole Valley High School.

The site says there is a free trial class. It says participation in tournaments is encouraged but not required. It also says kids and adults are offered classes, and all wrestling and kid’s judo classes are included with a Youth Membership. Safety and respect are emphasized, and new students learn how to fall properly. The FAQ says accidents can happen in any physical endeavor.

What families say

“My child has been there since the beginning of the kids program in 2015. We love Jonah Sensei!! He has such a patient teaching style. It’s great!!” — Mary Helen Okajima

“Class is always fun, informative and gripping. Haha get it?! Anyways, Sensei Jonah and Sensei Cody are great teachers and they teach more than just the movement of Judo – I find that the lessons in class apply to many things in life.” — Jeeshaun Wang

Last updated September 20, 2026.