It is our goal at Giant Gymnastics to provide a warm and nurturing environment in which to educate our students of all ages on leading a fit and healthy lifestyle.


We strive to provide a safe and fun atmosphere for our students to learn, play, and grow through gymnastics and other related activities.  Giant Gymnastics and its staff members encourage their students to grow not only physically, but socially as well.  Members are given opportunities to build fit bodies and minds every day!

With 2 Locations, you will be sure to find the program that is right for you and your family.  Let us be the first to welcome you to Giant Gymnastics!


This is our Sparta Location's website.
To reach our Hackettstown location, click the Switch to Hackettstown button at the top




    Phone and Internet down!
    Please be patient with our response time as we have no internet or phone service still. Thank you! ...
    We are OPEN today 12/5
    We are OPEN for classes today, 12/5. Please be patient as we still do not have phone or internet, but we do have power. Come charge your devices and get warm! ...
    Free Open Gym/Open Play 2-4pm today!
    Snow days can make us antsy! Time to get some energy out! Giant is offering a Free Open gym for ages 6 and up, and Free Open Play in our preschool area for 5 and under today, Wednesday, 12/4 from 2-4pm. No registration required. ...
    Adult Open Gym returns!
    Adult Open Gym returns to the schedule starting Monday, September 9th! Open gym is from 7:30-8:25pm. Please register online thru this link! ...

Flip Shop

Visit our very own proshop for the latest merchandise, gift certificates and special deals from Giant Gymnastics!

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USA Gym Club

usagymclub.com is a site developed by USA Gymnastics to share resources with parent of gymnasts or those who might be interested in getting their children involved in the sport of gymnastics.  usagymclub.com gives parents one place to go to get answers to all of their questions and – through the forum – ask questions of their own.

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Recent Offer

Summer can be busy, but with our new Pick 6 classes plan, your gymnast or tumbler can still keep improving!

Just pick 6 classes in July and August and pay $125! Contact the office to take advantage today!

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Employment Opportunities

Giant Gymnastics of Hackettstown and Sparta are seeking experienced girls/boys compulsory and option...


    Giant Gymnastics will be in our new location at 3 Park Lake Road starting Monday, March 11, 2019! Visit us at our Grand Re-Opening on Saturday, April 6th from 1-3pm! ...
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