Build Strength, Confidence & Discipline at MK Boxing Gym
Train with expert coaches in a supportive community. Boxing, kickboxing, Muay Thai, and kids classes for all levels.
Join Online - get 5% off on all Membership plans
SPRING Special
Get 1 year of unlimited gym access for just $99 per month. Take it while it lasts.
Try Before You Join
Try any of our classes for only $10. If you join, we will apply the paid fee to any membership.
All Levels Welcome. Start Training Today
Experience the best workout with great instructors, numerous boxing and kickboxing bags, conditioning mats and a professional boxing ring, as well as cardio and weight training equipment – all to help you get in the best shape ever!
Join the MK Boxing Family
MK Boxing Gym is a family-owned and operated boxing gym in Billerica, MA, proudly serving the community since 2005. With over 20 years of experience, we offer Boxing, Kickboxing, Muay Thai classes, as well as Kids and Teens Boxing classes for all levels.
Train with expert instructors at MK Boxing Gym—serving the Greater Boston area since 2005.
Open 6 days a week. All ages welcome. Start your journey today. 🥊
Our classes
Boxing
Boxing classes for beginner and advanced boxers. Age range: 12 years old (or younger) – to those in their 60’s.
Boxing for Children and Teens
Kids and Teens Boxing classes are great to help your children to be strong and gain confidence and self-assurance.
Kickboxing
Kickboxing classes will learn how to efficiently attack, improve your ability to throw kicks and punches while moving and remaining balanced.
Muay Thai
Muay Thai class has a heavy focus on body conditioning. Thai is specifically designed to promote the level of fitness and toughness required for ring competition.
News & Events
Youth Boxing Program
We have 2 programs to announce.
The first is a 6-week program begins this Saturday May 16, 2026 from 9:30am-10:30am.
Join this unique 5-week youth boxing program, starting June 29th, with sessions on Mondays, Wednesdays, and Fridays (9:30 – 11:00 AM).
Contact Mike at mikeknox@mkboxing.com. Early registration is recommended.
Memorial Day Closure
MK Boxing would like to take a moment to express our deepest gratitude to those who have served and sacrificed for our country.
Our facilities will be closed on May 25, 2026, in observance of Memorial Day, resuming our regular operating hours on Tuesday May 26, 2026.
Empowering Youth through Kids Boxing classes for K-4
Feeling anxious, stressed, or out of control? Learn how physical activity and boxing at MK Boxing Gym can lower cortisol, reduce stress, and restore mental and physical balance—no experience needed.
SELECT YOUR CLASS
Take as many classes as you like, the quality of our classes and instructors is excellent.
CHOOSE WHAT FITS BEST
Choose to work out on your own or take any of our classes for one low monthly fee.
1-ON-1 TRAINING
We will come up with a plan so that you are working efficiently to get you to better results.
Testimonials
I’ve been boxing for over 30 years and for the last 8 years I’ve had the great pleasure of being a member of MK Boxing. This summer I won the Ringside 2015 World Championship in the Masters Division and MK Boxing helped me achieve that – I couldn’t have done it without them. Owner Mike Knox, instructor Justin Piper and fellow member Christian Berrios have sparred with me and helped me train for all of my tournaments. Whether you want to compete or just get in shape there are trainers in all Martial Arts forms to help you meet and exceed your goals. Thank you Mike and the team at MK Boxing for all the great training.
It’s so refreshing to be a part of MK Boxing. From the members to the instructors, the environment at MK Boxing is inviting, encouraging and FUN! Every class is challenging and different. The instructors are not only experts in their respective disciplines, but they are passionate about developing everyone’s skills. Where else can you get such a variety of offerings in an enjoyable environment? Other gyms pale in comparison. Thank you for the best workout that I will ever love!
SPORT SUPPLEMENTS
You may order nutritional supplement products, specializing in weight management, energy, general wellness and sports performance.
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