Ultimate Ninjas

Oak Creek

Kids recreation, birthday parties, camps, open play, and adult fitness.

Gym Schedule

Ultimate Ninjas Oak Creek

Empower kids. Build Confidence.

Obstacle courses, coaching, open play, birthday parties, and fitness programs built for confidence, focus, and very tired car rides home.

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400 West Bell Court #350

Oak Creek, WI 53154

5.0

Google rating

Coach Led

Train like the floor is lava.

Weekly classes turn running, climbing, swinging, and landing into real skill work. Kids get a challenge that feels like play and progress parents can actually see.

Find a class

Balance, grip, jumps, and brave attempts 6+

Drop In

Give wiggles a finish line.

Open play gives kids space to climb, swing, jump, and test new moves without a full class commitment. It is the easy yes when everyone needs to burn energy.

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Climb, swing, jump, reset, repeat 6+

Party Energy

Bring the cake. We bring the course.

Birthday parties get kids moving fast with hosted obstacle time, room to cheer each other on, and a simple path for parents from booking to pickup.

Plan a party

Hosted obstacle time and party-room flow 90

Schedule

Find the next class time

PARTIES

Book a birthday party

AGES 3+

Open play and Lil Ninjas

VISIT

Directions and contact info

Choose the kind of energy you want to burn.

Start with classes, book a party, or drop in for open play. Every path gives kids room to test what they can do.

Kids classes

Structured coaching for balance, grip strength, coordination, and brave attempts.

Birthday parties

Hosted obstacle time, party rooms, and a simple path for parents.

Child discovers the joy of obstacles swinging on ninja loop

Open play

Drop in for climbing, swinging, jumping, and a reset for the whole house.

Kids camps

Week-long sessions over school breaks - obstacle skills, coaching, and a lot of tired kids.

Special events

Themed nights, challenges, and seasonal events throughout the year.

Adult fitness

ULTIFIT classes built around ninja obstacles for adults who want to move like a kid again.

Get moving

Let Them Climb, Jump, and Burn Off That Energy!

Looking for a fun, active way to get your kids moving? Ultimate Ninjas challenges kids to climb, jump, and swing their way to confidence - all while having a blast. Book your first class today.

Get a free class

Find a class that fits your week.

Consistent class blocks make it easier to plan around school, weekends, and party time.

Kids Classes

Mon–Fri 4:00pm, 5:00pm, 6:00pm

Open Play

Fri 6:00pm – 8:00pm

Sat–Sun 10:00am – 12:00pm

Adult Open Gym

Tue 7:00pm – 9:00pm

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What are people saying?

Ultimate Ninjas Oak Creek

4.8

Based on 80 reviews

review us on

Anthony Molina

6 months ago

Attended the Tuesday open gym as a surprise date night that my wife planned. I regularly do parkour and loved to train for Sasuke when I was younger. I had never been to a real ninja warrior gym but it exceeded expectations. The staff was extremely welcoming, the space was clean and had a ton of challenges that I've seen on TV but never had the chance to get my hands on. There is also a bouldering wall and a trampoline with a foam pit. I'll definitely be recommending it to anyone intested in ninja warrior challenges or just a fun place to play around and use your body!

Jason Kuechenmeister

7 months ago

Just like the real thing on the show Ultimate Ninja Warriors. This gym and the staff are amazing; our son loves it here and the skills he has learned are amazing. Highly recommend

Eric Witter

9 months ago

This place is amazing and great for the kiddos. 2nd time there and brought three 11 year old girls and one 7 year old girl. They had a blast. I think the hide and seek during camp was a big highlight. Paola took great care of us and Mike “The Stallion” Silenzi was great. Cannot recommend enough.

Kasey Kechter-Ryan

10 months ago

Our little one has been doing Little Ninja classes since he was about three. We have had the BEST experience.

The coaches are amazing, especially Coach Pao. They are so invested in and supportive of the kids, and when the kids achieve a new milestone, like conquering the warp wall, the coaches celebrate alongside them.

The courses are always changing and challenging, and have done so much for our little one's agility, balance, confidence, and stamina. I love knowing that my little one is burning off some extra energy and developing a love of exercise. I also appreciate that the facility is always clean!

10/10 recommend!

Taylor Shannon

12 months ago

Nice place with state of the art ninja warrior training. The coaches were friendly and willing to work with kids. My two boys loved it!

Sarah Salisott

1 year ago

Our toddler was able to go out and play for an open gym and we had an absolute blast! He struggles with muscle tone and we work with him through OT we were delighted to see so many of the same activities readily available here.

His absolute favorite was the little zip line and the ramp to run up and touch the button.

I highly recommend taking classes and trying open gym. Great for littles as well as big kids!

Paulina L

1 year ago

Went here with my daughter for a birthday party. Loved that they closed off half the gym at a time so kids had privacy and space to enjoy everything. The staff was great helping kids reach things and explaining what to do on the equipment.

Luciano Siragusa

1 year ago

Top notch facility. Super fun for the kids. The owner is suuuuuper friendly and checks in periodically. I couldn't say enough good things about this place. Priced affordably, clean, the list goes on

Brittany Bodnar

2 years ago

My kids had a blast. Owner was so friendly and nice. The coaches were great with the kids.

Sawsan Aichoune

2 years ago

We had a large birthday at Ultimate Ninja for my 6 year old today and it was absolutely amazing. The staff were so helpful and very welcoming. They were wonderful accommodating all our needs. Our guest list ranged from 6 to 17 and everyone had a blast. Even the adults participated and loved it so much. I highly recommend this place. Definitely looking into the classes they offer.

Katie Quinn

2 years ago

We visited for the first time Friday night to check out open gym and came back Sunday morning again. My son is obsessed and keeps asking to come back. Perfect for an active kiddo. I was impressed not only by the facility itself but also by how welcoming some of the “regular” kids are. Both days there were older kids who clearly visit regularly helping my son climb the walls and then playing with him. We will definitely be back and are considering this location for a birthday party spot. I am also thinking about getting my son signed up for a class since he loves it so much. My only suggestion would be to maybe give a tour to newbies- I can see how this place could be intimidating to some! There is so much to do!

german perez

2 years ago

Great and spacious place for kids to learn gymnastics and coordination. The instructors are excellent, they take their time with the kids and are patient. The atmosphere is also perfect it truly makes the kids feel motivated.

Ana Vidic

2 years ago

We went to a birthday party at Ultimate Ninjas in Oak Creek today and it was an amazing experience! The kids had an absolute blast! There are so many fun obstacles and activities for every age! We will definitely be returning here again and will sign up for some of their classes too! If you are looking for a unique, fun and exciting place to take your kids this winter or need a cool place to host a birthday party, this is a great choice! Definitely recommend!

Mark Gawronski

2 years ago

We celebrated our son’s 7th birthday at Ultimate Ninjas in Oak Creek, and it was an incredible experience! The staff was friendly, organized, and great with the kids. The facility is top-notch, with fun, challenging obstacles that kept everyone engaged and having a blast. The party setup was seamless, and they made sure everything ran smoothly from start to finish. Our son and his friends couldn’t stop talking about how much fun they had. Highly recommend Ultimate Ninjas for birthday parties or just a fun day out. Thank you for making our son’s birthday unforgettable! You guys rock!

Nicholas Earle

2 years ago

Trevor Morgan

2 years ago

Absolutely LOVE this place and so glad I found it.. my kiddo is 5 years old and he's now addicted to the classes. It helps build his muscles and his confidence!! 20.00 a week for 5 year olds and 25 a week for 6 up is a great deal. Mike (the owner) was an actual "Ninja Warrior" and has made it to the finals multiple times on the show.. Watch season 14, episode 8 (currently on Netflix).. He is the first person on that episode. He's the real deal and designs all the classes.

Lourdes Garcia

2 years ago

Mariana Alvarado

2 years ago

We attended a birthday party and it was great! We were in the little ninja area and the kids were fascinated by the warped wall with the slide. Pizza was delicious and the staff was very friendly!!

Alicia Fugate

2 years ago

We came for a birthday party and did not feel welcome or comfortable at all. They wouldn’t open the small kids area unless I paid $75! I was so scared that my daughter was going to get hurt by one of the big kids and all of the equipment flying around. My toddler came back into the play area after we had cake and we were told to leave and to stay with our party. I’ll never go back here again.

Wally Gulumian

2 years ago

Liz T

2 years ago

Jessie Tobin

2 years ago

My son loved his summer camp experience! He loved the activities, the staff was really engaged, and the way the gym is set up works well for all levels. We will definitely sign up next year too!

Gavin Green

2 years ago

If you're looking for an active field trip for kids who love to climb and try new things, this is 100% the place to go to.

Brought my class here on a field trip all the way from Madison and I can say it was for sure worth the trip! Mike, Nathan, and Marquez made sure my class had an amazing time on all of the ninja equipment while also making sure the kids were safe on new obstacles. They even provided us a room for lunch and to keep our things in.

Thanks guys!

Zachary Koch

2 years ago

Had our daughters B-Day party here - the place was clean, new, staff was great and fantastic for this kids to play, they all had a blast.

Nate Zimmer

2 years ago

Great place even for adults! Kids and adults can be challenged and have fun at this gym at any level from intro to pro. Big fan of the adult only hours and the diversity of the obstacles.

Emily Villajuan

2 years ago

Stephanie Ladd

2 years ago

We love Ultimate Ninjas OC! Nathan and Marquez are amazing human beings and my kids love them. They are kind and encouraging and fun and we love seeing them every week. The facility is awesome, clean and challenging for the kids. Can’t say enough good things about this place!

Jacob LaConte

2 years ago

We switched our two girls to Ultimate Ninjas Oak Creek from a gym in Hartland we had been at for a couple of years. It is a little longer drive, but it is easily worth it! The staff is very encouraging, the obstacles are super fun and the classes are well structured. Ninja is a great sport for kids of all ages, and Ultimate Ninjas is the place to do it.

Arianna Watry

2 years ago

We hosted our son’s birthday here and the experience was great. Staff was extremely friendly and attentive to helping. The kids had a GREAT time, and the schedule of each activity for the party was perfectly timed. Pizza was amazing too! Highly recommend, great business.

Simplybre

2 years ago

We had the honor of being the first party that they hosted. My daughter’s 7th birthday party was amazing! Mike followed up before the party to confirm everything and answered all of our questions. The staff was so awesome! Marquez and Nathan (as well as another young lady) interacted with all of the kids. They were very involved in assisting us with the set up of the room (we had themed tablecloths and balloons), pouring drinks, passing out pizza and cupcakes. They even stayed and sung happy birthday. It was truly a great experience that you won’t get anywhere else. You can tell everyone truly enjoys what they do. We will definitely return back, especially to check out those Ninja classes. So what are you waiting for??? Book today!!

Jamie Kramer

2 years ago

We had the best experience here today! The staff member working in the little kid area was awesome. She was super helpful and encouraging to both of my kids (2 and 5). I chatted with the owner a bit about the classes and he was very friendly and informative. We’ll definitely be back!