Ultimate Ninjas Academy
Empower kids. Build confidence.
Ultimate Ninjas Academy helps kids grow by developing a lasting love for movement, learning, and personal growth. Our programs are fueled by fun, guided by science.
Ages 9 months – 8 years
Obstacle play, movement skills, and confidence work for younger ninjas.
Try us out
$20 trial class
Ready to unleash your little one's inner ninja? Try a fun-filled obstacle course class before committing to a membership.
New
Special events
Movie nights, pizza parties, ninja challenges, open play, and seasonal events give families more ways to use the Academy.
Our Programs
Lil' Ninjas
Watch your little ninja grow strong inside and out! Our Lil' Ninjas classes (ages 3–5) build balance, strength, and confidence through obstacle play.
Kids Classes
Obstacle course fun meets fitness! Kids build strength, confidence, and coordination through age-based ninja classes - for ages 6 and up.
Elite Team
Ready to push past limits? Our Elite Team trains harder, tackles tougher obstacles, and competes at the highest level.
Kids Camps
School's out - fun is in! Academy camps give kids (ages 6–15) a week of obstacle skills, coaching, and great memories.
Birthday Parties
Level up your child's birthday! Ninjas run, jump, and conquer obstacles while you relax - no stress, no mess. Enjoy private party rooms.
Special Events & Open Gym
Let the energy fly at Open Play! Kids (ages 3+) run, climb, and explore ninja obstacles at their own pace - perfect for drop-in fun.
Activities + classes
Ninja classes for the youngest athletes.
UN Academy Ninja classes introduce little ninjas to tackling and conquering obstacles. Class offerings range from parent-involved beginning movement through independent skill-based obstacle classes for ages 9 months through 8 years old.
At the Brea Academy, kids develop coordination and strength through balancing, hanging, jumping, climbing, and running while building self-confidence and teamwork in a safe, positive environment.
Open gym
Open Play
Looking for something active, fun, and safe to do with your kids? Check out our open play sessions!
Your local Brea Ultimate Ninjas Academy provides a fun and challenging environment where kids can run, climb, and explore ninja obstacles at their own pace.
What are people saying?
Brea
Academy schedule
Current class and open play blocks from the Brea Academy schedule.
Panda Play and Learn
Ages 2 - 5 (2 hrs 30 min)
Crawlers & Walkers
Ages 6m - 24m (45 min)
Lil Ninjas
Ages 2 & 3 (50 min)
Junior Ninjas
Ages 4 & 5 (50 min)
Open Play
Who we are
Little Ninjas live by a code.
FRIENDSHIP
Little Ninjas are kind
RESPECT
Little Ninjas are great listeners
SUPPORT
Little Ninjas cheer for their friends
TEAMWORK
Little Ninjas help their friends
TRUTH
Be YOU
HAVE FUN!!!!
Next big thing in sports
Ninja makes its Olympic debut in 2028.
Ninja will make its debut in the 2028 Olympics, and your child has the chance to be part of this growing movement. Academy classes are a playful introduction to the skills and challenges behind the sport.
Strength & Agility
Running, jumping, and climbing through obstacle courses make little ninjas strong and quick.
Balance & Body Control
Balancing on beams and navigating obstacles helps kids control their bodies and stay steady.
Fun & Perseverance
Ninja training teaches kids to keep trying, even when challenges feel tough.
They're climbing. You're at lunch.
El Pollo Loco and Schlotzsky's are a few minutes down Imperial. Alza Osteria is next door. Trader Joe's is on Imperial when you've got longer than a class.
Frequently Asked Questions
FAQ
Ultimate Ninjas Academy – Brea
What is Ultimate Ninjas Academy Brea?
A north Orange County ninja training site on Kraemer Blvd — classes, open play, parties, and camps for Brea / Fullerton / Yorba Linda families.
How is Brea Academy different from a full gym?
Smaller floor, same sport. You're here for coaching and parties, not a giant all-ages warehouse.
What ages at Brea?
Academy bands typically start around 3–4 through school-age. See the Brea class page for current groups.
Can we try Brea first?
Yes — trial class before you buy a pack.
Where is Brea Academy?
191 S. Kraemer Blvd., Brea, CA. (714) 582-1234.
Does OC heat shut you down?
No. Indoor and cooled. Playground season is the one that dies in August.
Do parents stay at Brea?
For the youngest, yes. Older hours — coach will tell you.
What to wear in Brea?
Athletic clothes, closed-toe shoes, water.
How to start in Brea?
Trial or register on this page, Brea waiver, show up early.
What are Brea academy hours Monday through Friday?
Monday through Thursday the building is open 9:30 AM to 6:20 PM. Friday is 9:30 AM to 5:30 PM.
What are Brea's Saturday and Sunday building hours, and when do parties run?
Saturday and Sunday the building is open 9:30 AM to 12:30 PM. Parties run Saturday and Sunday from 1:00 PM to 6:00 PM.
What is the Brea registration fee, and what does membership cost?
The one-time registration fee is $40. Membership is $130 for one class a week, a second weekly class brings the total to $230, and the sibling discount is 15%.
Does a Brea membership include open play or a party discount?
Free weekly open play is included with membership, and that membership takes 10% off birthday party packages.
Brea, CA
Kids birthday parties with built-in movement.
Looking for a fun, active idea for your child's birthday party? Brea ninja party packages are built for a stress-free, screen-free celebration with obstacles, indoor play areas, ninja challenges, and a party room.
Brea, CA
