Mile High Karate Thornton
Kids karate classes in Thornton
Classes for ages 4–6 and 7–12, with character lessons in every class and the Black Belt as each child’s long-term goal.
Thornton, CO 80233(303) 280-1839Since 1983
Focus, confidence and respect, one belt at a time
Mile High Karate Thornton teaches karate to children ages 4–6 and 7–12 at 3979 E 120th Avenue in Thornton, Colorado. Children learn kicks, strikes, forms and self-defense, and every class includes a character lesson on habits such as focus, respect and self-discipline.
Younger and older children train in separate classes so each group learns at the right pace. Four- to six-year-olds work on listening, balance and coordination through short, active drills. Seven- to twelve-year-olds build stronger technique, forms and controlled sparring with padded safety equipment.
Each child works through a clear sequence of goals, from the first stripe to the Black Belt, which takes about 48 months of consistent training. Reaching each goal in front of classmates and parents is how confidence is built.
Two classes a week is the standard recommendation. Families come from Thornton, Northglenn, Brighton, Westminster and across the north Denver metro.

Karate skills and life skills
Kicks, strikes and blocks
Traditional technique taught step by step, with balance and coordination built in from the first class.
A lesson every class
Focus, respect, courtesy and self-discipline are taught on the mat and expected at home and school.
Stripes and belts
Short-term, intermediate and long-term goals that lead, over about four years, to the Black Belt.
Self-defense and awareness
How to avoid trouble, use a strong voice, and defend themselves only when they must. See bully prevention.
A Black Belt school since 1983

Mile High Karate Thornton is owned and operated by Amanda and Stephen Christensen, who have led Mile High Karate in the Thornton and Westminster area since 2003. The school belongs to the Mile High Karate organization founded in Colorado by Grand Master Stephen Oliver on August 6, 1983, with Grand Master Jeff Smith as Chief of Instruction, in the lineage of Grand Master Jhoon Rhee.
- More than 1,000 Black Belts promoted by Mile High Karate, ages 5 to 76
- Well over 30% of active Thornton students are Black Belts
- Well over 120 intramural tournaments hosted in Thornton
- Black Belt testing finishes at a three-day retreat in Breckenridge, Colorado
Kids karate questions
- What age can my child start karate in Thornton?Mile High Karate Thornton runs classes for ages 4–6 and 7–12. Most children are ready at 4, when they can follow a short instruction and take turns. Younger children can start in preschool martial arts.
- How often should my child attend karate?Two classes a week is the standard recommendation. It keeps skills progressing between classes and fits most family schedules.
- How long does it take a child to earn a Black Belt?About 48 months of consistent training. Black Belt candidates complete informal, formal and written tests, finishing with a three-day retreat in Breckenridge, Colorado.
- Is karate safe for kids?Yes, when it is taught well. Classes are supervised by trained instructors, contact is controlled, and sparring uses padded safety equipment. Children are taught that their skills are for self-defense only.
- Will karate help my child focus in school?Every class asks children to listen, follow instructions and finish what they start, and a character lesson is part of each class. Parents regularly tell us those habits carry over into school.
- How much do kids karate classes cost?Tuition depends on the program and how many classes a week your child attends. Call (303) 280-1839 for current programs and any introductory offer.
More answers are on the Mile High Karate Thornton parent FAQ.
Other programs at Mile High Karate Thornton
Book your child’s first karate class
Call to book an introductory lesson. The instructor meets the student, teaches a few basics and sets a first goal. Wear comfortable exercise clothes and bring water.
(303) 280-18393979 E 120th Ave, Thornton, CO 80233 · Directions
© Mile High Karate, LLC and Stephen Oliver – All Rights Reserved. Mile High Karate® is owned by Mile High Karate, LLC, Stephen Oliver – Founder, CEO.