Main Gym 1306 Elmer Street, Belmont, California 94002 (650) 591-8734
TumbleTown 601 Harbor Blvd, Belmont, CA 94002 (650) 622-4125


About Us

San Mateo Gymnastics has been operating since 1977 under Margaret Morrison’s ownership. We originally started at a small facility in San Mateo, CA which is how we got our name. We grew by leaps and bounds, which forced us to find a larger building and relocate to Belmont, CA in 1987 and we have been here ever since. Our facility houses all of the Olympic equipment for men and women, in addition to in-ground foam pits, trampolines and a TumbleTrak. Each year our instructors attend the Regional Congress for up-to-date training to follow the USAG standards. SMG provides a variety of gymnastics for all levels. We offer classes for kids from walking to 18 years of age. Our recreational classes include Munchkins, Girls, Boys, Acrobatic, Teens, and Tumbling. For students that progress to higher levels, we offer a full competitive program following USA Gymnastics Level 3 through Elite for both men and women. The athletes compete in State, Regional, National and International competitions.


Rules and Policies


Due the LAST WEEK OF EACH MONTH FOR THE UPCOMING MONTH. Payments received on or after the 1st will be charged a $5.00 late fee. We do not bill unless you are late with the payment, nor do we pro-rate for missed classes. All bank returned checks will incur a $25.00 charge. There are no refunds!

San Mateo Gymnastics is not obligated to give refunds and does not pro-rate any of its classes for absences. IT IS YOUR RESPONSIBILITY TO GIVE THE FRONT OFFICE A TWO WEEK WRITTEN NOTICE of your intention to discontinue classes. If you fail to do this you will be charged tuition until you notify us.

Annual Registration

For secondary insurance and administrative costs, $50.00 per year.


With 2 or more children enrolled you will receive a 10% discount on monthly fees. Children attending more than one class per week will receive a 5% monthly tuition discount.


For your child’s safety please arrive on time. The warm-up is very important to your child’s safety. Therefore, students arriving ten or more minutes late will not be allowed to participate in class.


Will be allowed for illness and vacation ONLY, provided that the office is notified prior to the commencement of the class to be missed. Make-ups must be completed within four weeks of the date of absence and prior to dropping a class. Make-up classes are held at designated times and are not available in other classes. There is no rescheduling of make-ups.


There are no make-ups for holidays. They are fixed into the monthly tuition rates. Scheduled holidays are:

New Year’s Eve & New Year’s Day
Thanksgiving Day & the following day
Christmas Eve & Christmas Day 

Memorial Day
Independence Day
Labor Day 

San Mateo Gymnastics will also be closed
from August 24th through September 3rd and the week between
Christmas and New Year’s Day.

Dress Code

Girls must wear a one-piece leotard. Tights without feet may be worn. Two-piece leotards or leotards with a skirt are not permitted. Hair must be tied up neatly. Boys can wear t-shirts and shorts or sweats without pockets. No large, baggy clothes or jeans. No zippers, snaps, buttons or jewelry allowed.

Insurance Restrictions

Due to insurance restrictions and for the safety of your child, no one is allowed in the training area before class begins or without an instructor. When class is over, the gymnast must leave the training area. The instructors will need to start the next class and therefore cannot supervise them. Only registered gymnasts are allowed in the training area. Our insurance does not allow parents or non-registered students in the training area, except during Munchkin & Me classes.


Unless otherwise specified in writing by the parent and/or guardian, San Mateo Gymnastics has permission to photograph your child for future use without compensation. Additionally, for the safety and privacy of our clients, we ask you to refrain from photographing children other than your own. When posting SMG photos to social media websites be certain to omit others unless their permission has been granted.

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Shared Responsibility

SMG provides the most up-to-date equipment, specified by USA Gymnastics, including all training aids designed to increase safety to a maximum.

We have a teaching staff that is a team of dedicated, experienced, professional coaches who are continually developing and advancing their skills in the areas of safety and gymnastics techniques.

We truly believe that a child with a background in gymnastics will have the physical and mental awareness to master many tasks that are required in other sports.

We have a year-round program. All students have a planned, progressive program of development. Evaluation is constant and switching to another class should ONLY be done when advised by the coaching staff, this will ensure greater productivity and consistency of learning for your child.

We require that ALL students are picked up promptly after class. This is for your child’s safety. Our staff will continue teaching and therefore will be unable to accept other responsibilities.

We aim to give you the highest standard of service. In order to do this and for reasons of safety, parent/child communication during lessons is strictly forbidden. Unattended siblings are also a safety hazard and are not permitted in San Mateo Gymnastics Center.

By sharing the above responsibilities we will provide the opportunity for the furtherance and benefit of all our students, gymnastics, and each other.

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What is the Tuition policy?

Tuition payments are due the last week of each month for the upcoming month. Payments made on or after the 1st will incur a late fee.

Will we receive a monthly statement?

You will only receive a statement if your payment is late, which would be after the 1st of the month.

Is there a membership fee?

Yes, there is a $50 annual registration fee per child.

Does SMG offer discounts?

SMG offers a 10% discount on monthly fees for families with 2 or more children enrolled. Children attending more than one class per week will receive a 5% monthly tuition discount. We DO NOT offer discounts on the registration fee.

If we miss a class, can we do a make-up?

Make-ups are allowed for illness and vacation only. You must notify the office prior to the start of class to be entitled to schedule a make-up. Make-ups must be done within four weeks of the absence and are held at designated times.

What if we want to STOP taking classes?

We are a year-round program. If your child wishes to stop attending, we require a written two-week notice to do so. Failure to notify the office of your child’s intention to discontinue classes will result in continuing to be charged for the class.

What if we want to take a BREAK?

During the summer months of June, July and August we offer a SUMMER HOLD. By paying a ½ month’s tuition for any or all of the summer months, you can save your space in the class when you return from vacation.

What does my child wear to class?

Girls must wear a one-piece leotard or swimsuit. Tights without feet may be worn. No jewelry other than post earrings can be worn. Boys can wear t-shirts and shorts or sweats without pockets, zippers, snaps or buttons.

I have twins. Can I attend the Munchkin & Me class with both of them?

Our policy for Munchkin & Me is one adult to one child. Both children may attend the class but a second adult must attend the class as well.

Does SMG offer an open workout time?

Yes! Enrolled students, age 6 and older, may attend Open Gym held on Saturdays from 2-4 p.m. for a small fee.

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