Junior Gym is a respected non-competitive gymnastics, tumbling and fitness facility, serving the San Mateo area since 1995.
  • Birthday Parties

    Schedule your next birthday party with us!

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  • Classes

    Fun filled classes and programs for various age groups throughout the week, encouraging your kids to exercise and have fun!

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  • Family Membership

    Take advantage of the savings with our family membership. Ask about our other membership options.

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  • What We Offer

    We offer a wide variety of classes and programs intended to promote physical activity and self confidence in children ages 6 months to 8 years.

    For children 3 and under we offer loosely structured 45 minute long parent/child classes. We offer recreational gymnastics for children ages 3 to 8. These hour long classes are structured with age appropriate and creative lesson plans. We also offer other programs like Sports Skills and Ballet, all taught in the Junior Gym style. As a perk for our members; we host open gym which is a drop in hour of free play twice a day Monday through Friday, and once a day on weekends.

  • Our Facilities

    We are proud to be a family operated small business – we are not a chain! Our friendly staff has created a great reputation for being patient, caring and creating an exciting and safe class environment. Ask around. We know you will hear great things about Junior Gym!

    NEW LOCATION!! Our newly renovated spacious facility provides a safe and challenging setting for all of our classes. Our large variety of equipment is moved each week to ensure a stimulating environment.

  • Beyond Classes

    In addition to our classes; we offer birthday parties and seasonal camps.

    Our camps provide fun weekly themes, and a combination of organized games in the gym with art projects, story time, healthy snack and more. We'll keep your kids active and having fun.

    Birthday parties are 2 action packed hours of music, games, cake and fun! Kick back and enjoy the party while our staff takes care of everything. Make your child's birthday one to remember with a private party at Junior Gym.



What People Are Saying

  • Love this place, as does my 19 month old son.   The owners are WONDERFUL.  They really get children.  The classes are great.  They re-design the room often so it’s always new to the little ones.

    - Michelle C.
  • The staff is awesome and so good with my little ones no matter how crazy they get, and it’s such a fun environment to be in.

    - Sailau T.
  • My girls have been taking classes with Justin since August and they LOVE him and the fun and challenging activities/lessons he plans for them! I highly recommend Junior Gym!

    - Kiela C.
  • We wouldn’t be able to live to so happily if it wasn’t for Junior Gym. Both my boys LOVE to go here, its a great way to have fun, get out your giggles and have a great kiddy workout!

    - Jeanne R.
  • “We love Jr Gym! Our 2 yr old son has been taking a weekly class here since he was 14 months old and it’s his favorite activity of the week.”

    - Sarah A.
  • “Great staff! Very energized, happy and they are super with the kids! Love their sports class!”

    - Meg T.
  • “Junior gym is a great place to hold an interactive birthday party… We have never been disappointed and will definitely be back many more times. Thank you junior gym for making our birthday parties trouble free!”

    - Rich W.