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DISCOVER THE NINJA IN YOU!

USA Ninja Challenge is turning kids into ninjas one obstacle at a time!
Jumping Ninja
I'm New Here
What to expect
Traversing Ninja
Classes
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Balancing Ninja
Parties
Booking or attending
Swinging Ninja
Camps
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Climbing Ninja
Team
Team info and calendar
Crawling Ninja
Staff
Your friendly
Our Location Pin

We're at:

19 Brigham Street, Unit 8 Marlborough, MA 01752

Call Us:

774-843-2066
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What's Happening at Ninja Marlborough!

Discover the Best Fitness Program for kids!

Come to our Ninja Gym and try your Risk-Free Ninja Class!

The sport of Ninja is quickly becoming the most fun and creative way to meet the physical needs of today’s kids! Ninja Challenge is open to boys and girls ages 4 to 17.

Rings Obstacle

Upcoming Events!

Summer Clinics All Summer -- Click here to register!

Class Registration is OPEN!!

Use the link provided to register your ninja(s), for classes!

Click here to register!

We are now offering Private Training Sessions!

Are you looking for a 1-on-1 class for your ninja. These sessions are the perfect environment for ultra-safe ninja training. Check out the Ninja Classes on this website for more info!

Classes

Ninja Fitness Classes give kids an immersive experience into the sport of Ninja. Children are introduced to a variety of obstacles and an interactive learning program. Your child will have a blast while learning fitness and life skills.

Sign Up Today!
Excited Ninja Student
Ninja Birthday Parties and Events

Parties

Looking to book an unforgettable party? Your kids will be glad you chose USA Ninja Challenge. Finally, there is a place where they’re encouraged to run, jump, climb, swing and have a lot of fun! Our parties are supervised by experienced coaches who provide your kids with a safe, fun environment. Book your child’s party or group event, and watch them become a Ninja!

Book Your Party

Clinics

USA Ninja Challenge offers an exciting day clinic experience! Our clinic program focuses on building confidence through fun and fitness. Kids will have the chance to test their limits in a safe environment, navigating obstacles with children their own age.

Register For Camp
Ninja Pegboard

PHYSICAL FITNESS IS ESSENTIAL FOR TODAY'S YOUTH

USA Ninja Challenge is a year-round obstacle course training program that combines basic skill sets from gymnastics, climbing, cross training and track & field. The sport of Ninja is quickly becoming the most fun and creative way to meet the physical needs of today’s kids! USA Ninja Challenge is open to boys and girls ages 2.5 to 17.

Our class program has 6 levels to master with a wide variety of progressions, drills and challenges. Ninjas that demonstrate their mastery of skills advance to the next level of training. Each Ninja progresses according to their own abilities. The purpose of the program is to build children’s self-esteem, confidence and sense of accomplishment, one obstacle at a time.

Jumping Ninja

Jumping

Ninja jumping includes box jumps, long jump, jumping over or onto obstacles, from platform to platform and even from platforms to ropes and cargo nets!

Climbing Ninja

Climbing

Kids involved in Ninja get to climb ropes, cargo nets, peg boards, rock walls, ladders and warped walls.

Swinging Ninja

Swinging

We've upped the game from swing sets to swinging on rings, ropes, hanging ladders, nun chucks and cannon balls!

Traversing Ninja

Traversing

There are plenty of obstacles to traverse in a Ninja gym:  cargo nets, spotting blocks, rock walls, peg boards, ledges and devil steps, to name a few!

Balancing Ninja

Balance

One of our top priorities is to develop well-balanced ninjas. These training activities include balance beams, slack lines, wobble ramps, quintuple steps and rolling barrels!

Crawling Ninja

Floor Skills

This category includes running, block pushing, and vaulting.  In addition, Ninjas also learn tumbling skills so they can look extremely cool while attacking obstacles!