By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. View our Privacy Policy for more information.


Facility Designed for Strength, Conditioning, and Performance
Train at SOS
At Skill of Strength, you’ll train in a 6,000+ sq. ft. facility built for speed, power, and performance — featuring open turf, rubber flooring, and top-tier equipment like free weights, kettlebells, battle ropes, suspension trainers, gymnastics rings, speed sleds, slide boards, plyometric boxes, and Olympic lifting platforms. Whether you’re an athlete preparing for your next season or an adult looking to move better, get stronger, and stay active — this is where dedicated individuals come to get better.
Our Facility Provides:
- Over 6,000 sq. ft. of turf & training space
- Top-of-the-line strength & conditioning equipment
- Easy class reservations & scheduling
- Changing rooms and showers for pre- and post-workout
- Bright, clean space in a historic mill building
- Plenty of free parking and flexible hours 6 days a week
Conveniently located in North Chelmsford, just off Routes 3 and 495, we’re proud to serve athletes and adults from Chelmsford, Lowell, Littleton, Dracut, Westford, Dunstable, Groton, Tyngsborough, Billerica, and across the Merrimack Valley.
Our Programs:
At Skill of Strength, we offer expert coaching, smart programming, and a supportive community to help you get stronger, faster, and more confident — no matter your starting point.
- Personal Training — One-on-one coaching tailored to your goals, body, and lifestyle.
- MOVE Adult Functional Training — Small-group strength and conditioning classes in a motivating environment.
- Customized Training Plans — In-gym or at-home programs to keep you progressing all year.
- Youth Sports Performance — Safe, progressive training to help young athletes build a strong foundation and excel in sport.
Join a community of driven athletes and experience the difference of training with purpose, expert coaching, and a facility designed for results.
Questions? We (probably) have the answers!
How do I sign up for a a free class?
How long does it take to see results?
What are the ages for your group training programs?
What sets you apart from other gyms?
How often do you recommend coming to workout classes?
This is some text inside of a div block.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse varius enim in eros elementum tristique. Duis cursus, mi quis viverra ornare, eros dolor interdum nulla, ut commodo diam libero vitae erat. Aenean faucibus nibh et justo cursus id rutrum lorem imperdiet. Nunc ut sem vitae risus tristique posuere.
Still curious? Talk to us!
(Select Location)
Getting stronger starts with showing up. Located in the heart of North Chelmsford, Skill of Strength is quick to find, easy to access, and ready to welcome you so you can spend more time training and less time traveling.
This is some text inside of a div block.
Come visit us
73 Princeton St. Suite 9 North Chelmsford, MA 01863 USA
Get DirectionsChelmsford
You don't have to be great to start, but you do have to start to be great.

