ULTIFIT St. Louis

fitness • Group Personal Training • Obstacle Course Mastery

ULTIFIT St. Louis


Your first class is always free!
ULTIFIT Classes
Mon-Fri: 5:30 am – 11:30 am
Mon & Wed: 5:00 pm – 7:00 pm
Sat: 6:30 am – 8:30 am
Adult Open Gym
Mon: 7:30 pm – 9:00 pm
Tues: 8:00 pm – 9:00 pm
Fri: 7:30 pm – 9:30 pm
Gym Membership Options

push4progress | 6-weeks unlimited access

Maximize Your Personal Growth

Our Push4Progress program challenges new members to explore their fitness gains through with 6 weeks of unlimited classes and workouts, with personalized fitness testing at the beginning and end of the 6 weeks.

During this life changing 6 week program you'll find motivation and accomplishment in making and reaching  a new personal best.

Start your push 4 progress trial anytime and receive unlimited access to our obstacle course and climbing gym in O’Fallon, MO for 6 weeks!

Sign Up Now
Learn More

WHY CHOOSE ULTIFIT?

There are so many reasons our clients love ULTIFIT workouts at our amazing ninja gym in O’Fallon, MO, including...
  • You'll never do the same workout twice.
  • ULTIFIT's Daily dynamic warm-ups improve mobility and prepare your body for better movement
  • Whether you're an elite athlete or just starting out, our quality personal trainers can help modify any/all workouts to meet your personal needs.
  • Clients experience an uplifting, positive, and fun workout environment that is unlike any other.
  • Trainers at our ninja gym in O’Fallon, MO are true experts at what they do and even include competitors from NBC's hit TV show American Ninja Warrior and Netflix's Ultimate Beastmaster.
  • Sign up process is simple with no long-term contracts required.

GET 6 WEEKS UNLIMITED

ONLY $149.99 (that's under $4/day!)

Our 6-week "Push4Progress" program is all about personal growth; being better than YOU were yesterday.

As part of Push4Progress we test our members' fitness levels every 6 week to keep them motivated and excited about working toward new results!

For newcomers, it's the perfect way to test drive ULTIFIT and experience climbing and obstacle course training or classes at our O’Fallon, MO gym for yourself. We are one of the fastest growing fitness experiences in the industry!

Start your push 4 progress trial anytime and receive unlimited access to our ninja gym in O’Fallon, MO for 6 weeks!

Register Now

Making the decision to improve your physical fitness isn’t always an easy one. You should know—you’re not alone.

ULTIFIT in Chesterfield and serving the O’Fallon area offers obstacle course training from our professionals, who are here for you, every step of the way. From the moment you become our client, we’re here to guide you through the ULTIFIT workout by combining the highly effective principles of high-intensity interval training (HIIT) and the optional obstacle course training.

No matter what your fitness level, the ULTIFIT workout is designed to be a fun, effective experience for all. Whether you are an advanced athlete or are just beginning your fitness journey, the ULTIFIT workout is designed to engage you at your skill level and help you progress along the way.

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Group Personal Training


ULTIFIT in Chesterfield serves the O’Fallon area’s Group Personal Training classes are unlike any other workout you’ll find. These 50-minute sessions are offered at a variety of times to accommodate any schedule.

Whether your career is at home or in an office, choose from early morning, evening, or weekend classes that suit any life schedule. You’ll feel right at home with our HIIT training workout that delivers results in a welcoming, comfortable group environment that is easily modified for all fitness levels. Our O’Fallon area workout facility and gym staff will guide you through a workout that can be tailored around existing injuries or other physical limitations.

Our Group Personal Training class offers all individuals a chance to participate in a challenging workout that focuses on helping you become stronger with the support of the culture of our ULTIFIT community. We know, once you’re in the door, you’ll come back for more!

Obstacle Course Training in the O’Fallon Area


Up your fitness game with ULTIFIT’s Obstacle Course Fusion class. Are you training for your next—or first—Tough Mudder competition or marathon? Want to try your luck at becoming an Ninja Warrior or IRONMAN? Perhaps you’re looking for a new workout challenge that blends the extraordinary with a fun, competitive training style that takes your workout to a new level?

Then ULTIFIT’s Obstacle Course Fusion is designed just for you! Overcome any obstacle with our training classes and workouts! Sign up now for Group Personal or Obstacle Course Fusion Training at ULTIFIT in the O’Fallon area, or stop by today!

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Personal Training

Add on 1-3 hours of personal training per week and instantly level up to our Ultimate Membership, while also getting the 1 on 1 accountability you need to reach your goals.

Military & First Responders Discount

Add on 1-3 hours of personal training per week and instantly level up to our Ultimate Membership, while also getting the 1 on 1 accountability you need to reach your goals.

Gift Cards

Give the gift of fitness to your loved one! Gift cards can be purchased at the front desk of Ultimate Ninjas.

No Membership Needed

$20 Walk-in for a class at our one of a kind ninja gym in O’Fallon, MO without a membership. Low commitment with high intensity training.

Same Household Discount

10% off each additional (ULTIFIT) membership.

Ninja Warrior Competitor Discount

25% off of any membership or package.
Next Push 4 Progress
Test drive the program with unlimited access for 6 weeks!
Schedule