Traditional Karate for Tilton, Northfield, Concord, & Beyond

Our Traditional Uechi Ryu Karate Classes Offer Fitness, Self-Defense, and High-Energy Fun!

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603 Karate

Why Choose Karate? Why Choose Us?

We're on a mission to provide the best traditional karate training for everyone from Tilton-Northfield to Concord. Our kids karate classes aim to improve self-esteem and build confidence, create discipline, and teach respect. Our teen and adult karate classes offer practical self-defense training, a fun and exciting path to fitness, plus enhanced focus in everyday life! 

At 603 Karate, we're giving our members the chance to use traditional martial arts training as a path to advance their lives, careers, and happiness. We provide a positive, supportive training environment with stellar karate instruction. John Guarnieri, the owner and head instructor at 603 Karate, served in New Hampshire Law Enforcement for nine years, and during that time garnered the professionalism, real-world experience, and self-defense knowledge to be able to teach traditional karate with a modern perspective. 

Join our community here in Tilton-Northfield and learn how you can gain confidence, cultivate self-discipline, and lead a healthier, happier life through the tenets of traditional Uechi Ryu Karate training!

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Our Expert Team

After decades of training and nearly ten years of law enforcement experience, Head Instructor John Guarnieri is committed to bringing traditional karate training to the Tilton-Northfield community. You'll find no better teacher anywhere in New Hampshire! 


Our Core Values

The eight traditional virtues of Uechi Ryu Karate are taught and embraced here at 603 Karate. That means we place a high premium on courtesy, compassion, modesty, integrity, self-control, perseverance, gratitude, and the indomitable spirit!


Our Mission

Training in the martial arts gives students a way to cultivate strong personal values while simultaneously gaining a sense of confidence in everything they do. We want to create a happier, healthier community by instilling strong values and offering a place where people can gather and train together. 


Our Promise

We pledge to provide our members with a supportive community where they can ask questions, learn deeply, and grow as individuals. We are committed to creating real personal progress and maintaining a safe, positive environment. 603 Karate is for everyone in the Tilton-Northfield community!


Kids Martial Arts

Our kids karate classes are focused on teaching the fundamentals of Uechi Ryu Karate, starting with basic techniques, and instilling strong values such as self-confidence, discipline, and respect. We also teach bully defense and real-life skills. Your child will have so much fun with karate, they won't even realize how much they're learning!

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Teen Martial Arts

At 603 Karate, we take the modern approach to Teens Martial Arts with self-defense and fitness training that is consistently fun and exciting for teens of all experience levels. The positive approach of our instructors motivates teens in Tilton-Northfield to work hard and be the best version of themselves.

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Adult Martial Arts

Our Adult Karate program offers comprehensive, newcomer-friendly training by some of the best martial artists in Northfield. In our classes, you will learn to hone your mind and body to become a master of yourself and your safety. No matter your experience level, 603 Karate invites you to start your path to self-defense today!

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More Than Just Physical Fitness

Uechi Ryu Karate Sets Students Up For Lasting Success

Confidence & Self-Esteem in Northfield - 603 Karate

Confidence & Self-Esteem

Traditional karate training instills a powerful sense of a self-confidence. You'll feel better about your body, sharpen your mind, and strengthen your spirit. Join us and discover that the martial arts offer so much more than physical fitness... they offer a wealth of mental health benefits too!

Discipline & Self-Control in Northfield - 603 Karate

Discipline & Self-Control

As you progress through the various kata that we teach in our Uechi Ryu Karate system, you'll learn discipline and focus. More complex techniques require conscious self-control. As you train, you'll discover how this mental fortitude translates over into professional and scholastic success.

Self-Defense in Northfield - 603 Karate


After nine years of experience working in law enforcement, Head Instructor John Guarnieri has a real-world understanding of self-defense. That's why 603 Karate teaches a system which has strong roots in tradition and real value in a dangerous situation. Learn how to protect yourself, your loved ones, and stay safe in any situation.

New Friends & Mentors in Northfield - 603 Karate

New Friends & Mentors

Uechi Ryu Karate has a rich history of strong foundational values, creating personal growth, and respecting the teachings of wise mentors. When you train at 603 Karate, you'll meet other like-minded members of our community, be challenged, train under an experienced instructor, and have the opportunity to create positive life change.

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