The San Diego MMA Gym | The Arena

Welcome to The Arena, ranked the best MMA Gym in San Diego California, and in the Top 10 MMA Gyms in the U.S. We are a TRUE Mixed Martial Arts school, strong in everything we offer. We have 125 weekly classes in Boxing, Jiu Jitsu, Judo, MMA, Muay Thai, Wrestling, CrossFit and FightBuilt, more than any gym in the USA. AND ALL OUR CLASSES ARE INCLUDED FOR ONE LOW RATE!!!

Because we believe so strongly we provide the best programs, training and value of ANY Mixed Martial Arts gym in America, we offer a 30 DAY RISK FREE TRIAL. Just complete our FREE TRIAL form on this page and then come in and train.

Boxing | Jiu Jitsu | MMA | Muay Thai & More!

With one of the top teams of Coaches in North America, as well as one of the best fight camps in the world for training, we offer high level instruction in all the Martial Arts we teach. No experience? No problem. We’ll get you going immediately. Want a Fight Career? We’ll bring you to the top of your game.


The Arena is NOT A CARDIO KICKBOXING GYM. Instead, we teach real Martial Arts. So if you want THE BEST in Boxing, Jiu Jitsu, Judo, MMA, Muay Thai, Wrestling and Strength & Conditioning gyms in California / United States / The World, you found it. Now fill out our FREE TRIAL form and then come on in and train to see for yourself.