UndergrounD Fitness and Self Defense

$$ • Martial Arts School

8769 Old Kings Rd S, Jacksonville, FL 32217

About UndergrounD Fitness and Self Defense

UndergrounD Fitness and Self Defense offers personalized martial arts and self-defense training in a supportive, Montessori-style dojo in Jacksonville, FL. Serving the Mandarin, Deerwood, Arlington, Westside/NAS, and Del Rio areas, they provide karate lessons for children ages 3 and up, self-defense classes, women's self-defense, karate for adults, and mixed martial arts. Their unique approach empowers students to grow at their own pace, with expert instructors who make the training fun and build confidence, fitness, and real-world protection. Highly recommended by students for the easy-to-learn, practical system, patient teaching, and welcoming environment that fosters discipline and success for all ages and skill levels.

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Reviews for UndergrounD Fitness and Self Defense

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  • Nov 2025

    I have goals of exercising if I am not walking, riding my bike or playing tennis. I came here to try it out. I also love Karate and martial arts. Our style is tae kwon do, but we also do boxing, kung fu forms, weapons. I did BJJ here also, but coach Cliff has his own dojo now. Master Ben is very good at instruction as well as our other other Sensei Master Williams. Master Ben is a weapons expert and Master Williams is our personal trainer if you will ,motivating us to do are exercise outside of class also. I enjoy coming to Underground fitness and self defense.

  • Aug 2025

    Great dojo for all ages! Their system is easy to learn, practical, and teaches lifelong self-defense skills. The instructors make it fun while building confidence and discipline. Highly recommend.

  • Aug 2025

    We have been participating in online classes. Master LaMasters is an excellent and very patient teacher explaining moves so that anyone can understand them. His teaching pace allows for all participants to be successful. I highly recommend!

Hours

Monday: 12 - 8PM
Tuesday: 12 - 8PM
Wednesday: 12 - 8PM
Thursday: 12 - 8PM
Friday: 12 - 4PM
Saturday: 9:30AM - 12:30PM
Sunday: Closed

Location

8769 Old Kings Rd S, Jacksonville

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