St. Louis Kids Birthday Parties

Parties start at $225

Book Today for an AMAZING experience!

Party Like an American Ninja Warrior!

Fun for Everyone
Make your kids birthday party completely unforgettable with an active, fun-packed, ninja party! Kids love our party packages, taking on our many obstacles & ninja challenges, which are the same as those on NBC’s hit show, American Ninja Warrior. But wait, there's more! Your St Louis party package means your adult guests are also welcome to join in the fun at your St. Louis Ultimate Ninja kids event! !
Easy Planning
At Ultimate Ninjas St. Louis, we take the hassle out of your kids party! No planning, setup, or clean-up necessary. Just show up and have a blast!
Spacious Indoor obstacle courses, a private party room, and personalized party package are all yours.
What's Included In Your St. Louis Party Package?
Kids Party Packages include:
 Private kids party area
 Private course access followed by your own party room for celebration
 Access to all of our obstacles, climbing wall, warped walls, and basketball court
 Private party room with plates, napkins, cups, utensils, and water
 Birthday child receives Ultimate Ninjas T-Shirt
 Birthday Child receives free trial class at Ultimate Ninjas OR 1 free hour of open play
 Set-up, clean-up, and everything in between is handled by Ultimate Ninjas staff
Kids Birthday PartiesAdult Fitness Program, 30 Day Trial. Parents & caregivers with kids in classes: Try an ULTIFIT Class & get a free Hoodie or T-Shirt!
Kids Birthday Party North Shore

Kids Party Add-Ons


Add the challenge package option to your party today!

Ninja vs. Ninja, Timed Course Runs, Obstacle Specific Challenges, Ultimate Ninjas Leaderboard Challenges
Team Building, Motivating, and Rewarding Activities
Obstacle challenges and structure tailored to your ninja skills and size
Combine it with our Ninja Bracelets Giveaway as the kids Beat. That. Wall! Just $5 for your whole party!
New to the package: NinjaWorks timer and buzzer! Hear your child's name over the loudspeaker!
Recommended for ages 7+

North Shor Pizza Party


Pizza must be ordered for your kids birthday party 48 hours in advance, directly through Ultimate Ninjas St Louis.

One Large pizza feeds 5-6 children. Complimentary juice boxes are provided with orders of 3 or more pizzas.

Party FAQ Kids Party Answers

Party FAQ Kids Party Answers
North Shore FAQ

Does Ultimate Ninjas have an age limit for parties?
While there are not any age restrictions during birthday parties, we do recommend that the birthday child be turning at least 5. Please call us to discuss options for younger birthday celebrants! Only guests ages 4-17 are included toward the final headcount.

Is the Guest of Honor included in the headcount?
The birthday celebrant is not included towards the total count, nor are children under 4 and adults 18 and over. Parental supervision is required for guests under the age of 4.

Can adults participate too?
Yes! Anyone entering the course will need an Ultimate Ninjas waiver on file.  If you have signed one for your child, you have signed one for yourself by default.  For example: if Mom completed a waiver for the kids, Dad will still need to complete a separate waiver and select the ‘just me’ option should he choose to enter the course.

When do I need to inform Ultimate Ninjas of my headcount?
If you are below 40 participants, there is no need! Additional attendees above the standard party package can be added up to the start-time as there is no need to be exact with this count prior to the party.  We will simply take a headcount as we check-in your group and will adjust accordingly prior to the end of the party. If you are planning on having more than 40 participants, please reach out to us at

Can I bring my own food?
  • Entrée for participants is required to be ordered through Ultimate Ninjas. Pizza should be ordered no less than 48 hours in advance.  We do make exceptions for outside catering due to allergies or extenuating circumstances, but you will have to make arrangements for delivery.  As a rule of thumb, a large pizza ordered through Ultimate Ninjas feeds roughly 4-6 children depending on age at 2 slices per. Our vendor is Jets Pizza.
  • We do allow any outside food that isn’t considered a main entrée. Fruit and veggie trays, other snacks, and desserts are among popular foods brought in.  We have cake knives and lighters, but please bring candles.
  • Honest Kids juice boxes are free of charge with an order of 3 or more pizzas. We also have water coolers in the party rooms should you need additional hydration free of charge.  Plates, napkins, utensils, and cups are also provided free of charge.

Can I bring decorations?
Yes! You are more than welcome to bring your own decorations. Our party rooms are blue and green. Each party room has a total of 4 party tables and seats 40 kids maximum.

What is the cancellation/reschedule policy?
Your $100 deposit can be transferred to another date provided its more than 30 days out. Any change or cancellation within 30 days would result in loss of deposit. Please call to discuss any extenuating circumstances that would cause a problem with your party date within 30 days.

Do you have a parking lot?
Yes! We have a strip of 50 parking sports directly in front of the gym. Extra parking spots are found directly in front of Hi-NRG

Are there any other activities going on during my party?
If you are booking the Premiere or Ultimate Party Package then there are no other activities going on during your party! Those two party packages include a semi-private event where your party will be out enjoying the obstacles together, but another party could be going on utilizing the other side of the course. During the Open Play Party Package it will be open to the public, so other people can be out on the course playing on the obstacles at the same time as your party guests. If you are interested in an entire facility rental, please call us at (636) 206-8550 or email us at
What Our Customers Are Saying 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.

My kids absolutely love this gym! We just had my oldest's birthday party there and it was fabulous! All the kids had a great time and the employees were awesome with them! It was nice rotating through the sections of the gym where it was just our party and the kids were able to continuously do the obstacles.Amy J.