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Chesterfield Gym Hours

Kids Classes
Mon-Thu:4:30 pm, 5:30 pm, 6:30 pm
Fri:4:30 pm, 5:30 pm
Kids Birthday Parties
Sat:12:40 pm – 7:20 pm
Sun:12:00 pm – 7:20 pm
Open Gym
Fri:6:30 pm
Sat:10:00 am, 11:00am
Sun:10:00am – 11:00am

First class is always free!

Call (636) 206-8550 to claim your free class.

Ultimate Ninjas Chesterfield

Kids Fitness Classes

If you're looking for a fun, unique, confidence building exercise option for your child, look no further! Ultimate Ninjas Chesterfield provides an amazing opportunity for kids of all ages, providing not only exercise, but helping them build self-confidence, develop agility, learn to over come obstacles, and prepare them to reach higher than you ever imagined.

Classes are designed by Professional Athletes who train to conquer obstacles like those seen on the hit obstacle course competition shows. Challenge yourself.

Be Awesome. Have FUN!

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O'Fallon Ninja Gym | Kids Birthday Party & Fitness Programs

Family Open Gym

Looking for something active, fun, and safe to do with your kids? How about an exciting, challenging evening of Ninja fun - a unique combination of exercise, agility training, and strength building all while gaining confidence in a fun, safe environment.

Check out our family open play days! We provide a fun and challenging way to help your kids get out all of their energy while tackling our obstacle and agility courses! Practice and explore a variety of obstacles, fine tune your skills on a single obstacle, or practice running our customizable courses.

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Make your kids birthday party AMAZING at Ultimate Ninjas Chesterfield!

We are one of the best destinations for kids birthday parties! Our unique, active party place is the perfect choice to keep your guests entertained, and provide a healthy, exercise-rich environment for adults and kids alike! Take full advantage of your very own indoor obstacle courses, private party room, free custom evites, with optional pizza & drinks!

Planning a birthday party has never been so easy, check out our online reservations, and reserve your date today at Ultimate Ninjas!

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Ninja Camp is Cool!

Ultimate Ninjas Camps are designed to teach the techniques used to conquer any obstacle - and we have several!

Our focus is on getting fit and having FUN while building endurance, strength, coordination, and learning how to quickly and safely maneuver through various obstacles.

Camps include:

  • Obstacle Stations
  • Working on technique
  • Games
  • Courses
  • Open play

Camps are designed for ages 5-16. 


1/2 Day $45 
Full day $80
1/2 Day full week $175
Full day full week $295
Week Pass: $295
15% Sibling Discount

Must call to receive discount (636) 206-8550

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Summer Camps

Looking for something AMAZING to offer your kids over break? Send them to Ultimate Ninjas Camps, where they will learn how to tackle obstacles as seenon TV. At Ultimate Ninjas it's so much fun to get back up and try again.....

At Ultimate Ninjas, we instill self-confidence, acceptance, and a true hunger for tackling obstacles with a positive mindset. The best part: we have a BLAST doing it! The camps are designed by 3 time American Ninja Jesse Labreck, you will not find a more positive environment where kids can show up, be valued for exactly who they are, and discover what they are uniquely capable of achieving.

During camp, kids are grouped together by age and rotate through stations where they are coached on each obstacle. After learning how to tackle the obstacles, they have time for open play so they can pick their favorites and spend extra time on the obstacles they want to master or just enjoy! At the end of camp all kids will get a chance to run through the course with their coaches just like you see on TV!


$45 for your first session, each additional session for that week is $40 | 50% sibling discount

Summer Camps

June & August
Camps | Mon-Fri
All Day
Camps | Mon-Fri
Morning Only
Register Here
Eric (Tesla)
Eric (Tesla)
Good place for a kids birthday party. Plenty to do here. They also have rooms available for food and cake after the kids play.
Max Sachuk
Max Sachuk
Great place for kids to be active.
Marika Ezugbaya
Marika Ezugbaya
We had great birthday party for my 7year old.
Angela Hall
Angela Hall
We have been sending our 3 year old daughter to the little ninjas preschool obstacle course class at ultimate ninjas and couldn’t be happier. I was worried about sending her since she’s on the smaller side, but all the coaches are very patient and helpful. Coach Dana and Coach Mike create an incredibly motivating and encouraging environment, challenging the kids in a supportive way that allows them to become stronger and more confident while also having tons of fun. My daughter tends to fade in her enthusiasm for new activities but she can’t wait to go to “ninja class” each week.
Amit Nagpal
Amit Nagpal
I visited this place for a birthday party. I was impressed by the place. The party was organized very nicely. The staff was very helpful and they took care of the kids and the celebration neatly. Overall I would recommend this place for birthday celebrations.
Michael Etman
Michael Etman
Unfortunately, air side is very thick with sweat. Hope they fix.
Nickie Wickersheim
Nickie Wickersheim
We had the best birthday party here for my 8 year old! All the kids had a blast and were entertained the whole time, and I was able to enjoy every minute because the staff took care of everything!
Fierce Beauty Warrior
Fierce Beauty Warrior
Great ninja gym. Employees are very knowledgeable and helped out a lot

Adult Fitness

Join a community of people coming together to pursue their passion for movement and to help each other become better. We welcome those who are looking to be part of a supportive community that will inspire you to break limits and achieve things you previously thought impossible.
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Meet Our General Manager

COVID-19 Safety Procedures

We are thrilled to be returning to a sense or normalcy!
Our top priority is the safety of the community we have here in Chesterfield. We will continue to operate in accordance with the county's current guidelines.

What our customershave to say about us

We just threw my daughter's 6th birthday party here and it was wonderful! They were very helpful and accommodating. Our guests had a great time and the staff assigned to help our party could not have been nicer. I would recommend this for a party venue (or just a fun open play/class activity) to anyone!Hannah B.
Yesterday was an awesome day! Ivan had a great run and placed 2nd. And he manifested that he would get on the podium today and he did!His confidence continues to soar and we love watching him in his element.Ultimate Ninjas St Louis has been a happy place for our family. It has been a wonderful supportive community of people who want to see everyone win.These athletes support each other like no oth. Carrie Chick-Schmitt