Martial Arts & Karate Classes in Sartell, MN
Confidence, Fitness & Life Skills for Kids, Teens and Adults
Owners and Directors
Hours of Operations
Mon-Fri:4:30pm – 9:00pm
Sat:9:00am – 3:00pm
Sun:Closed
About Sartell National Karate
Sartell National Karate has been training students in the Sartell area for over 15 years. With a school history that’s over 50 years old, and with the support of our 10th degree grandmasters, Mr. Carnahan and Mr. Worley, our school is uniquely able to help students of all ages benefit from martial arts training. Strength, flexibility and fitness are physical benefits that can be realized through our training. Respect, self-control, discipline, and focus are mental benefits that help students become more confident and self-assured. Self-defense is woven through our lessons and helps to “bully-proof” people of all ages.
Our professional instructors are highly trained and dedicated to helping all of our students to achieve their personal goals. We are located on Pinecone Road north of Coborns in Sartell and are open from Monday through Friday from 4:00 to 8:00 pm and Saturday mornings. Our teacher-student ratio is about 1-3 or 1-4 and our classes are ½ hour for beginners and longer for more advanced students and adults. New students are always welcome and no appointment is needed to begin class. Simply arrive about 15 minutes before any age appropriate white belt class (see Sartell Schedules online or call to find times and ages) and you can begin class that day. Another option for students who want a little more information is to call the school to schedule a free introductory lesson. An introductory lesson is a good way to meet the instructor, take your first class in a secure setting and take a tour of the school.
We offer competition team opportunities and specialized competition training and as a NASKA accredited school our students often compete in local, regional and national tournaments. National Karate Sartell partners with the Sartell/St. Cloud/Sauk Rapids Schools, Big Brothers-Big Sisters, New Horizon Daycares, and stays active in supporting local events and organizations. Our instructors take pride in the quality of our students and our black belts are amazing and world recognized.
We invite everyone to come and join the National Karate organization, learn the benefits of martial arts training, gain skills that teach perseverance and self-reliance, and begin your journey to excellence. According to Grandmaster Worley, “The only way to fail on your personal path to realizing your dreams is to quit.”
Sartell Martial Arts and Karate Classes
Meet our Leadership Team & Instructors
Sartell National Karate is proud of its excellent instructors and staff. Following in his black belt father’s footsteps, Mr. James Halonen began his training at the age of five, and he quickly rose through the ranks earning his own black belt at the age of 12. He now holds the rank of 5th degree black belt after years of dedicated training and competition. As the owner of National Karate Sartell, Mr. Halonen believes karate training emphasizes not only physical fitness and technique but also mental discipline and focus, which are essential components of martial arts training. He teaches self-defense classes to women and children in his community helping them to feel empowered and safe. Mr. Halonen’s dedication to martial arts, his commitment to his school and students, and his passion for empowering individuals through self-defense support every one of his students as they work to achieve their personal best.
Wyatt Bostrom began studying at National Karate at 12 years old. He quickly fell in love with the sport, and at 16, earned his first-degree black belt. Through his time at NK, he has learned important life skills like self-control and self-confidence. Now, as an instructor, he gets to pass on these same lessons to students. The most rewarding part about teaching is watching students develop passion for the art and find belonging within it. In addition to teaching, he competes and volunteers in sport karate tournaments. In 2025, he was ranked #3 in Minnesota for sparring. Outside of karate, he enjoys weightlifting, writing stories, and baking pizzas for friends and family. Mr. Bostrom hopes to see you in class!
Ms. Olivia Nahan is a 3rd degree black belt who has been training since she was 6 years old. As a karate student, Olivia learned how to manage and achieve her goals successfully from a young age. Throughout the years, karate has helped her build discipline and confidence. Along with that, karate has taught her how to handle pressure calmly.
One of her favorite things about teaching karate is being able to help give others the opportunity to build confidence and discipline, all while having fun. As an instructor, she enjoys seeing students grow into well-rounded, confident martial artists, as well as watching students overcome any challenges by pushing through and not giving up. One of her hobbies outside of karate is hairstyling, and she plans to go to cosmetology school in the fall of 2026.
What People Are Saying About Us
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Includes required training uniform