Indoor Ninja Gym for
Fun. Training. Competition.
Located in the heart of San Mateo, CA, Ninja Republic is where kids and families across the Bay Area come to climb, swing, jump, and conquer thrilling ninja warrior obstacle courses. Designed for fun, fitness, and fearless adventure, our ninja gym helps every child feel like a hero—right here in Silicon Valley.
Camps
Kids 6-13 can tackle ninja warrior obstacles, movement games, and fun challenges! With expert instruction, they'll conquer warped walls, cargo nets, salmon ladders, and more.
Activities include Parkour Tag, Dodgeball, and American Ninja Warrior episodes during lunch. Full-day and half-day options available.
Morning snack provided; bring lunch & water bottle. Single-day spots may be available—call or email the week before!
Ultimate Ninja Party
Throw the ultimate Ninja Party! Our action-packed parties let your child and their guests run, jump, climb, and swing through real ninja warrior obstacles—like warped walls, rope swings, monkey bars, and more!
Guided by expert coaches, party guests will take on fun challenges, obstacle games, and team activities in a safe, high-energy environment.
The birthday star gets VIP treatment with time to shine on the course!
COMPETITIONS
Our competition team is composed of athletes who range from beginner to elite.
We compete in the Bay Area Ninja League (BANL), UNAA and FINA. If you've always been the best on the monkey bars, let us introduce you to the competitive world of ninja warrior!
BTW, did you know ninja is going to be in the 2028 LA Olympics??
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FUNDRAISERS
Want to throw a party for your team, school or church group AND raise money to support your organization? We've got you covered.
Our ninja warrior fundraising nights are the perfect opportunity to show off your skills and have a blast! Best part? We donate 20% of the proceeds back to your organization.
WHAT PEOPLE SAY ABOUT NINJA REPUBLIC
DOREEN T.
The owner, Regan obviously cares about safety, cleanliness, and encouraging kids to push so they can get better (at an appropriate level). He knows all the regulars.
We love Ninja Republic :)
JONATHAN D.
Great course for kids and adults. I was expecting it to be basically a kids place (and it was great for that especially since for parties you rent out the whole space) but there are tons of great obstacles that will challenge almost any adult.
LILIANA M.
If I can give 10 stars. I would. The owner is amazing, and he definitely knows how to take care of his customers. He really is involved and interested in just challenging the kids and understandingwhat their doing. This place was amazing.