Why families choose CATS
CATS (Colorado Athletic Training School) helps kids grow into happy, healthy, and confident individuals. Families choose us for more than gymnastics — our programs in parkour, aerial, climbing, and ninja encourage movement, teamwork, and fun. With safety-focused, passionate coaches, kids build skills, confidence, and friendships that last a lifetime. Learn More >
Our story
Founded in 1988 by Rob Candelaria, a CU gymnast and avid climber, CATS began with one of the first indoor climbing walls in the nation. Together with his wife Wendy Rein — a climber, gymnast, and triathlete — Rob has grown CATS into Boulder’s home for movement, adventure, and community. Read More >
Our affiliations
Your child’s safety, growth, and joy are our top priorities. That’s why CATS is proud to be affiliated with USA Gymnastics, Safe Sport, and the Positive Coaching Alliance — organizations that set the national standard for youth sports and coaching.
Our Boulder Roots
For over 35 years, CATS has been part of the Boulder community. You may have seen us leaping down the streets on our long trampoline at the BolderBoulder!
Generations of kids have trained, grown, and come back after graduation to coach and reconnect. We’re more than a gym — we’re a community that celebrates Boulder’s love for movement, the outdoors, and adventure.
Unforgettable experiences at CATS
The fun doesn't stop, explore our offerings beyond classes
