Certified by UndergrounD Fitness and Self Defense • May 17, 2026
About
Certified by UndergrounD Fitness and Self Defense • May 17, 2026
Martial Arts SchoolSelf Defense SchoolFitness Classes
Discover personalized martial arts and self-defense training at our Montessori-style dojo in Jacksonville, FL. Serving Mandarin, Deerwood, Arlington, Westside/NAS, and Del Rio, we offer karate lessons for children ages 3 and up, self-defense classes, women’s self-defense, karate for adults, and mixed martial arts. Our unique approach empowers students to grow at their own pace in a safe, supportive environment. Whether you're searching for “karate near me” or “self defense classes in Jacksonville,” we provide expert instruction for all ages and skill levels. Join us today to build confidence, fitness, and real-world protection.
Location
Certified by UndergrounD Fitness and Self Defense • May 17, 2026
Certified by UndergrounD Fitness and Self Defense • May 17, 2026
Monday12:00 PM - 8:00 PM
Tuesday12:00 PM - 8:00 PM
Wednesday12:00 PM - 8:00 PM
Thursday12:00 PM - 8:00 PM
Friday12:00 PM - 4:00 PM
Saturday9:30 AM - 12:30 PM
SundayClosed
Reviews
5.0
43 reviews
5 stars
43
4 stars0
3 stars0
2 stars0
1 star0
HT
Haris T
Mar 8, 2025
5.0
I really admire the professionalism of the gentlemen running this location. We have seen a big difference in ours son’ behavior and self defense capabilities. It took some time but our son shows much more interest in going and improving his skills.
KM
Kimberly Megargel
Oct 6, 2024
5.0
When my granddaughter said she was having her 7th birthday party here, I'll admit I was sure most of the kids wouldn't participate and the party would end up a bust. I'll also admit that I couldn't have been more wrong.
The instructor kept the kids engaged and motivated the entire two hours. The games he played with them were educational and fun but he didn't let any of them win just for the sake of winning. He was encouraging, professional, personable, and the kids had a great time.
If you're looking for something different to do for a child's birthday party, hands down this is one of the best experiences I've ever witnessed.
EM
Edith Megargel
Feb 9, 2024
5.0
Master Lemasters and Master Williams are a great with my kids. They are very passionate about what they do and in turn the kids are very excited to learn from them. My son , 3 , looks forward to his Minja class and I love that fact the he has a structured class in which he has fun, learns about self control, and makes new friends. My daughter ,6, and I have the opportunity to train in the same class. We are not only learning self defense but we get to spend some quality time together.
KS
Kristina Scanlon
Oct 28, 2023
5.0
I absolutely recommend Underground Fitness they are amazing. I have seen a change in my son’s confidence already in just a short period of time and I have them to thank. My daughter is also loving the classes and is having so much fun. I am so fortunate to have found them and to be apart of their community. We meet three times a week and the classes are always changing which is really nice because they are constantly learning new things. They also offer zoom classes which is super convenient in case your unable to attend a class your kids have the opportunity to still participate in the fun Zia zoom.
LK
Lauren Kelly
Aug 15, 2022
5.0
My son has been attending underground fitness for over a year and absolutely loves it! Master Ben and Williams are fantastic with the kids, patient, teach respect, build up confidence, and provide a great positive outlet for my energetic kiddo. Classes are offered multiple times a week which is super convenient and you can attend as many as you’d like as part of the membership! Online classes are included which he absolutely loves as well. They are super convenient on busy days, and keeps his interest and is super engaging. Highly recommend them!
Frequently Asked Questions About UndergrounD Fitness and Self Defense
What types of martial arts and self-defense classes does UndergrounD Fitness and Self Defense offer?
UndergrounD Fitness and Self Defense offers karate lessons for children ages 3 and up, women's self-defense, karate for adults, self-defense classes, and mixed martial arts.
What is the teaching style used at UndergrounD Fitness and Self Defense?
The dojo uses a Montessori-style approach that allows students to grow at their own pace in a safe and supportive environment.
What are the operating hours of UndergrounD Fitness and Self Defense?
The dojo is open Monday through Thursday from 12:00 PM to 8:00 PM, Friday from 12:00 PM to 4:00 PM, Saturday from 9:30 AM to 12:30 PM, and is closed on Sundays.
Where is UndergrounD Fitness and Self Defense located?
It is located at 8769 Old Kings Road South, Jacksonville, FL 32217, USA.
How can I contact UndergrounD Fitness and Self Defense for more information?
You can call them at +1 904-704-7888 or email master_lamasters@yahoo.com.
Is there a website where I can learn more about UndergrounD Fitness and Self Defense?
Yes, their website is https://www.underground-training.com/.
Are there any convenient dining options nearby for before or after my class?
Yes, nearby dining options include Subway for sandwiches, El Agave Azul Baymeadows for Mexican cuisine, Brazil Store and Supermercado Brasileiro for Brazilian food, Golden House for noodles, and ali baba grille and hookah lounge for Middle Eastern dishes.
Can I find grocery stores near UndergrounD Fitness and Self Defense to do some shopping after class?
Yes, nearby grocery stores include Winn Dixie, ALDI, Brazil Store, and Supermercado Brasileiro, which also offer a variety of food selections.
What fitness or wellness facilities are close to UndergrounD Fitness and Self Defense?
Planet Fitness gym and Floating Sea Aquatics aquarium are nearby, offering additional opportunities for fitness and recreation after your martial arts training.
Are there any financial or service-related businesses near UndergrounD Fitness and Self Defense that might be useful?
Yes, nearby services include Coinstar for currency exchange, Jackson Hewitt Tax Service and H&R Block for taxes, Western Union for money transfer, Boost Mobile for telecommunications, and We Do Locksmith for locksmith needs.
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