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Welcome to Kentfield Mixed Martial Arts
Martial arts taught in a fun and relaxed atmosphere without the aggression or intimidation. Learn Skills, Focus and Discipline that will serve you for life.
Classes for all ages and levels…
Beginning and first time students always welcome and encouraged.
Learn from masters of various martial arts in a low impact and controlled manner 
that allows you to learn techniques without getting injured.

Choose from Jiu Jitsu, Mixed Martial Arts, or Striking based classes.
Learn real world self-defense with solid basics of grappling and striking defense. Gain power, speed, coordination and muscle from serious workouts for your entire body and mind. Private lessons with exceptional teachers and kids classes available too.



Kentfield MMA Expert Instructors

Woolf Barnato
As a Marin county native, Woolf Barnato began training in Jiu Jitsu following in the footsteps of his older sister who is now a black belt in Brazilian Jiu Jitsu. Searching for some structure in his life, Woolf began training in Brazilian Jiu Jitsu seriously at the age of 16 and was quickly recognized as a prodigy of the sport and progressed rapidly through the ranks. By 18 he was training full time and competing regularly becoming a world champion as a purple belt in 2013 under the International Brazilian Jiu Jitsu Federation and a Pan Am IBJJF blue belt gold medalist. Some of his other titles now include:

Gold Medal - IBJJF New York Open - Brown Belt division 2014
Gold Medal - IBJJF Houston Open - Brown Belt division 2014
Pan American Silver medalist – 2014 Brown Belt division
3x American Cup Champion – 2010, 2013, 2014
2x US Open Champion – 2010, 2013
2x IBJJF SF International Open Champion – 2012, 2013
IBJJF World Champion 2013
IBJJF Pan American Champion 2012

World Champion Silver medalist – 2011 Blue Belt division

Woolf currently holds a brown belt under Ralph Gracie and Kurt Osiander.

He is someone who truly enjoys teaching and keeps his classes moving at a very fast pace while still keeping them highly technical. His teaching style emphasizes accurate technique and a clear, linear progression that builds on each previous class. Students constantly remark that their skills have improved vastly after just a few classes under Woolf’s instruction which has created a very dedicated following of this young phenom.

Julian Marquez
Native to Hawaii, Julian Marquez began training in Jiu Jitsu when he was 15 years old. After enrolling at the Gracie Longman Jiu-Jitsu Academy in Hawaii he quickly established himself as a talented practitioner and went on travel the world training, teaching and competing. He currently trains under Kurt Osiander at Ralph Gracie San Francisco where he earned his Black Belt in Brazilian Jiu Jitsu. Julian has also trained and instructed at East Coast Jiu Jitsu, Ireland and holds the following titles:

Silver - IBJJF Houston Open – Black Belt Division 2013
Gold - IBJJF San Francisco Open Champion – Brown Belt Division 2013
2x Gold - American Cup – Brown Belt Division 2013 & Purple Belt Division 2008
Gold - All Star Champion – Brown Belt – 2012
Grapplers Quest - Gold – Purple Belt Division & Silver Advanced no-gi 2011
Gold – Gracie United – Blue Belt Division - 2006

Julian has a passion for Jiu Jitsu that shines through in his commitment to teaching. In his spare time he teaches Jiu Jitsu to children through the Kids Program at the Ralph Gracie Academy. Most of the children he teaches come from diverse and challenging upbringings and he sees a parallel between his life and that of the kids he mentors. “Jiu Jitsu saved my life” he said, recalling his troubled teen years, “I work with kids from all backgrounds and I love that Jiu Jitsu brings everyone to an equal level.” Beyond technique, Julian also instructs students on the principles of Jiu Jitsu which include proper nutrition, integrity, honor and responsibility.

Julian’s message to all Jiu Jitsu students regardless of age or ability is the same “Just show up to class.” His teaching style is calm, patient and perfect for both beginners as well as experienced practitioners.

When not practicing Jiu Jitsu Julian spends as much time as possible outdoors surfing, hiking and cross-training.


Mike McGibben
Mike McGibben
Age 42, 6'2", 225lbs. Mike's training began in San Jose, CA at age 18 and has been anything but traditional, focusing on what works on the streets not what is allowed in tournaments. His training began with Master Dan Choi in Tang Soo Do and Hapkido. He earned a Blackbelt in Tang Soo by 1989. He's trained with Green Berets, Hells Angels, professional fighters, and renowned Japanese, Chinese and Korean martial arts masters. His search for the practical and most effective fighting techniques came under instructors like Master Adam Hsu who is a recognized authority on Northern Chinese Martial Arts with the foundation of Mike's training being the arts of Baji Chuan and Islamic Longfist. His most recent training was in a Pat Miletich affiliated MMA school in Bozeman, Montana where students trained in Behring Brazilian Jiu Jitsu, boxing and Thai Kickboxing. His training with a variety of martial artists has provided a very versatile knowledge of real world self-defense

(415) 455-8018 ©2013 MMA Kentfield. All rights reserved.
Drop in for a visit:

 941 Sir Francis Drake Blvd.

Phone: (415) 455-8018
Email: kentfieldfitness@gmail.com

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