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Indoor Ninja Gym for
Fun. Training. Competition.

The Best Ninja Warrior Gym in San Mateo, CA

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What Is Ninja Republic?

Welcome to Ninja Republic – The Ultimate Ninja Warrior Gym in the Bay Area

Looking for an exciting and active experience for kids, teens, and adults? Ninja Republic is the Bay Area’s premier ninja warrior gym, designed for all skill levels. Whether you’re training like a ninja, planning an unforgettable birthday party, or searching for the best summer camp near San Mateo, we’ve got you covered.

Our state-of-the-art facility features popular ninja obstacles including the Warped Wall, Salmon Ladder, Fly Bars, Devil Steps, Tilting Ladders, and Spinning Wheels—perfect for ninja classes, competitions, and open gym fun.

 

We also host high-energy birthday parties, school fundraisers, team-building events, and seasonal ninja camps in a safe, indoor environment.

Join the Ninja Republic community today—where fitness meets fun, and every visit is a new adventure!

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!

Ninja Republic | Summer Camp | San Mateo
Ninja Republic | Ninja Warrior Birthday Party | San Mateo, CA

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??

Ninja Republic | Ninja Warrior Obstacle Course | San Mateo, CA
Ninja Warrior | Fundraisers | San Mateo CA

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

Ninja Republic | Kids Gym | Bay Area

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 :)

Ninja Republic | obstacle course gym for kids | Bay Area

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.

American Ninja Warrior gym Bay Area

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.

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WHY YOU SHOULD GET OUR EMAILS?

Our emails are infrequent and only contain info about upcoming events, camps, classes, open gym sessions, and competitions. No fluff, just the info we think you'd want. We do not, and will not, share your email with anyone else.

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