Every child walks in a little unsure. Maybe they're shy. Maybe they're full of energy but need direction. Maybe they're brave — until something feels hard.
That's where the journey begins. Through structured progressions and intentional coaching, we guide them through challenges that build strength in body, resilience in mind, and confidence that carries into life.
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Whether it's a first cartwheel or a competition-ready routine, every program is designed to meet athletes exactly where they are.
Early heroes are built through movement. Our KinderGym program introduces coordination, balance, listening skills, and social confidence in a structured and supportive environment. Every obstacle conquered becomes a building block for independence and courage. This is where bravery starts small — and grows fast.
This is where belief replaces doubt. Our recreational program challenges athletes to progress through structured skill development while learning discipline, focus, and perseverance. Each level introduces new physical challenges and new internal growth. They don't just learn skills. They learn what they are capable of.
This is where belief replaces doubt. Our recreational program challenges athletes to progress through structured skill development while learning discipline, focus, and perseverance. Each level introduces new physical challenges and new internal growth. They don't just learn skills. They learn what they are capable of.
Power. Control. Confidence. Our tumbling program develops explosive strength and body awareness while teaching athletes how to safely push their limits. Progress here isn't accidental — it's earned through consistency and mindset. Champions may train here. But heroes are built through the process.
Strength in body. Resilience in mind. Confidence that carries into life.
Every child walks in a little unsure. Maybe they're shy. Maybe they're full of energy but need direction. Maybe they're brave — until something feels hard.
That's where the journey begins.
Through structured progressions and intentional coaching, we challenge kids in the right way — safely, patiently, and consistently. They fall. They try again. They learn to listen. They learn to focus. They learn that effort changes outcomes.
Physical gymnastics builds strength and coordination. Mental gymnastics builds resilience — the ability to handle frustration, take correction, and keep going.
Confidence here isn't about being the loudest in the room. It's about raising a hand. Trying again after falling. Standing taller than they did yesterday.
And the best part? That confidence doesn't stay in the gym. It shows up at school. In friendships. In how they carry themselves when life gets challenging.
This is where effort turns into belief.
This is where kids begin to see who they're becoming.
This is where a hero's journey begins.
Parents don't just enroll their child in a class. They begin a journey.
No wasted rotations. Every class builds on the last with clear skill pathways.
Team culture with personalized coaching. Every athlete gets what they need to progress.
USAG-trained coaches with ongoing professional development and mentorship.
Transparent progression from beginner to advanced. You always know what's next.
We don't chase quick wins. We build foundations that last years, not months.
Gymnastics is the tool. Character is the goal. We build confident humans, not just athletes.
Enter your kids' ages and we'll show you which class times line up — so everyone trains together and you make one trip.
Founded by Zachary Stevens in Concord, California, Cal Strong began with a simple but powerful belief: gymnastics isn't just a sport—it's the foundation for every sport, and more importantly, for life itself.
Your child's development, safety, and joy come before trophies or Instagram posts.
Professionally trained coaches with proven progressions that maximize learning and safety.
Children first, sports second. We build confident, respectful, resilient athletes.
Families drive 30 minutes each way because they've found something irreplaceable.
Real stories from real families in our community
"We love California Strong Athletics! Their expert coaches are kind and motivating. I can't believe how my daughter's skills have developed over the couple of years she has been here. I recommend it to everyone—especially if your kids actually want to learn gymnastics skills vs just doing obstacle courses."
"My son is absolutely OBSESSED with California Strong! He begs to go every day and can't wait for his next class. The coaches are truly invested in each child's development. It's clear they're not just teaching gymnastics, but building confident athletes. It's been a game-changer for my son's physical and emotional growth!"
"My daughter has blossomed here. So much fun but with direction. Super personable approach. Kind and fun (!) coaches. The gym itself is well kept with a very nice waiting area for parents. Super, super happy we found this place."
"Both of my kids are enrolled and they absolutely love it! The staff is incredibly accommodating—they helped us find overlapping class times so I could watch both kids without running between locations. The facility is clean, professional, and the coaches genuinely care about each child's progress. Worth every penny!"
"The competitive team program here is top-notch. My daughter went from recreational gymnastics to competing at Level 5, and the coaching has been exceptional every step of the way. They push the athletes while keeping it fun and supportive. The team culture is unlike anything we've experienced—true community and genuine care."
"What sets Cal Strong apart is the intentional skill progression. My son isn't just doing random flips—he's learning proper technique from USAG-certified coaches who break down every movement. In six months he went from struggling with cartwheels to confidently performing back handsprings. These coaches know their stuff!"
Join hundreds of families in the Cal Strong community
Start Your 30-Day Conditional Trial Contact UsAsk any coach, trainer, or athlete what separates good athletes from great ones, and they'll tell you: it's the fundamentals. Body awareness. Balance. Strength. Flexibility. The ability to think quickly, adapt, and recover.
Gymnastics builds all of this faster and more completely than any other sport. It's not just about gymnastics—it's the foundation for every sport, and for life itself.
Develops full-body strength, core stability, and functional power athletes need for every sport.
Spatial awareness and body control that translates to faster learning in any athletic activity.
Builds resilience, focus, and the ability to overcome fear and push past limits.
Every mastered skill builds self-confidence and teaches discipline, perseverance, and goal-setting.
Cal Strong offers Parent & Tot beginning at age 1.5, three Kindergym levels beginning at age 3.5, Girls and Boys Recreational Gymnastics, Tumbling, High School Cheer Tumbling, Adult Tumbling, and Pre-Team and Competitive Team programs. Placement is based on age, readiness, and skill level.
Kindergym starts at $125/month. Recreational Levels 1–2 and Tumbling start at $145/month. Level 3 Rec classes are $170/month. Platinum and Ultimate memberships provide additional weekly classes and bonus-class benefits. A one-time $75 annual registration and insurance fee applies per student. We also offer a 20% sibling discount and up to 73% off an additional recreational or tumbling class.
Available for Recreational Gymnastics, Tumbling, and Kindergym (not team programs). When you enroll, you start an active month-to-month membership that continues automatically unless you submit written cancellation. During the first 30 days, attend every scheduled class — up to the first four classes. If it's not the right fit after completing those classes, you can request a tuition refund. Missing a scheduled class or continuing beyond four classes ends refund eligibility. The $75 annual fee is non-refundable.
Fitted athletic clothing that allows a full range of motion. Secure long hair. No jewelry, jeans, restrictive clothing, or baggy clothing. Trampoline socks are allowed; otherwise athletes participate barefoot.
Yes! Families can watch from our comfortable viewing lobby through the windows and live camera stream. For safety, parents may not enter the gym unless they are participating in Parent & Tot with their child.
Cal Strong does not offer traditional makeup classes. Kickoff members receive one bonus class per month; Platinum and Ultimate members receive two. Bonus classes may be requested up to seven days in advance, are subject to availability, and do not roll over. To request one, email info@californiastrongathletics.com with the class and time you'd like.
Enrolled members have access to Unlimited Classes during June, July, November, and December. During these months, eligible members can check into additional classes beyond their regular schedule. Booking is same-day only and based on eligibility and age. To reserve a spot, identify the specific class and time you'd like to attend and email info@californiastrongathletics.com with your request. Availability is not guaranteed.
Submit written notice through your customer portal or email info@californiastrongathletics.com before the first day of the month. Notices received on or after the first extend the drop period. Competitive team deposits follow a separate team drop policy.
Absolutely! Use our Family Class Finder to see all overlapping same-day class combinations. Plus, you'll receive a 20% sibling discount on additional children enrolled. Email info@californiastrongathletics.com to coordinate schedules.
Yes! Adult Tumbling meets Tuesdays from 7:30–8:30 PM. Pricing: $25 per drop-in class or $160 for an eight-class punch pass that can be used as you go. No experience needed — all skill levels welcome.
Cal Strong hosts Open Gym on the first Friday of the month (7:00–8:30 PM, $15 early bird for members), Parents Night Out on the third Friday (7:00–10:30 PM, $55 early bird), and a Tumbling Clinic on the last Friday ($40 early bird). All events require online registration — check the parent portal for current dates and availability.
Yes! Birthday packages start at $399 (Ninja Plus, up to 10 children). Ninja Gold is $499 for up to 15 children, and Ninja Extreme is $599 for up to 20 children. Additional children are $15 each. Optional add-ons include extended gym time, additional coaches, and a bounce house. Check the parent portal for availability and current add-on pricing.
The Cal Strong Classic is a boys gymnastics meet for USAG Levels 3–10 on February 27–28, 2027. Athlete entry is $130. Spectator admission is $20; children age 5 and under are free. See the Cal Strong Classic page for registration details and deadlines.
Download the iClassPro app and enter organization keyword CSAGYMNASTICS. Use the portal to manage enrollment, submit drop requests, book bonus classes, and register for special events. For management support, email info@californiastrongathletics.com.
From first cartwheel to big dreams—this is where your child's journey begins. Our community is waiting to welcome you.
Daily moments, athlete wins, and behind-the-scenes at Cal Strong
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