My son has been coming here for over a year now and the experience has been great. Awesome…read moreprofessors and coaches on every shift. They really work well with kids to prepare them for competitions and just the regular training is first class. The gym is never dirty! Always smells and looks spotless. Really grateful for my son to be apart of this epic community.

I've recently joined CJJF and it's my first BJJ experience. I have both a judo and wrestling…read morebackground so I wanted to try something different. I'm a very shy person and wanted to come out of my comfort zone so that's why I've decided to join this club. The staffing and coaches are extremely friendly and welcomed me right away! The coaches and staff are very patient and are willing to teach above and beyond! The dojo is very clean and organized. There are classes everyday which is great if you have a busy schedule. I'm very happy and excited to continue coming to practice! If you're looking to start BJJ somewhere and don't know where to go, I highly recommend CJJF!!

Great gym that covers all aspects of fighting. Coach Desi, Moku, and Brandon are all high-level…read moreinstructors with competition experience that have a deep knowledge in every aspect of Martial Arts. They've helped me tremendously not only on, but off the mats aswell and bring the best out of me. Classes are open to all ages, facility is very neat and organized. Great people that create a great environment to train in. Wouldn't wanna train anywhere else

Very knowledgeable and friendly should give it a try…read more Everyone that trains there is also nice

Had the privilege of visiting this location in Waipahu. Awesome vibes! The owner, Linda, sat with…read moremy wife and I and talked about their progression and philosophy. Really felt warm, inviting, and structured. The night I went had a good mix of weight classes and skill level.

Amazing experience at Waipahu. Aunty Linda was very welcoming and informative as it was my first…read moretime visiting and watching my goddaughter play and receive her promotion. My goddaughter is flourishing and constantly growing at this location. Her instructors here provide a structure that encourages her to continuously grow. She came from a gym where she remained stagnant even though a substantial amount of time had passed. I'm truly grateful to every instructor at Waipahu for creating such a welcoming and nurturing space for my Honey to learn, grow, and be healthy and happy!

I was on island for a long weekend, a training partner who previously trained at O2; reached out to…read moresee if I could drop-in on an early morning open mat. I was stoked that I got approved. Everyone was extremely welcoming. The level of Jiu-jitsu was very high and although everyone was going after it, there was no one trying to hurt anyone or any big egos. I'm very thankful, I was allowed to experience this wonderful academy and hope to roll with these guys again the next time I'm on Oahu.

The students and instructors at O2 are incredible! They offer a variety of classes and everyone is…read moreso friendly and welcoming. I joined about two years ago for kickboxing (PJ, Chris, and Justin are incredible), but really appreciated that the membership allows you to divide up your classes however you like. I ended up taking up jiu jitsu and recently started kali escrima with Ian - my only regret is that I didn't start sooner. Marital arts is such a humbling experience, and walking into a new gym can be so intimidating. O2 is perfect for every experience level from the individual who has only seen action movies to the high level grappler and those who spar regularly. As a whole, they call it the O2 fam and it truly feels like it! The gym is actually owned by Mike and Chris, two brothers, who truly give it a family feel. They, and all the coaches, are amazing at what they do and lead their classes with expertise and a lot of humor. And as another reviewer mentioned, this is definitely somewhere where you have to check your ego at the door because it's a fam and we have to take care of each other. O2 is on the second floor above Goodwill along Kamehameha. There's plenty of parking and the lot entrance is on Hekaha. During the pandemic they kept the gym open and prioritized membership safety with online classes then grappling with dummies and working in pods. They offer times throughout the day and on weekends. The schedule is a little modified because of COVID but definitely check them out!

I brought my son here to drop in for the keiki (kids) class since we're on vacation from out of…read moretown. Professor Rexie and the rest of the Alliance Jiu Jitsu family we awesome and have so much Aloha. Something we don't see much of in the mainland. Professor Rexie made my son feel welcomed and comfortable while training. He also explains the instruction to the kids in a way that the kids understand. We will definitely bring our son back her to train whenever we are back in Hawaii. Please give Alliance BJJ a shot if you're ever interested in taking class.

Professor Rex and his staff are fantastic. My son was terrified to go since he has no experience…read moreand didn't know what to expect. They welcomed him to the ohana with open arms and he has had a blast learning about being a leader and learning skills that he will take with him throughout his life. One of the best decisions we have made.

Calabrese Combat Academy has been an amazing experience for our whole family. The atmosphere is…read morealways clean, comfortable, and incredibly welcoming -- it truly feels like a second home. Coach Jason, Coach Paul, and Coach Taylor have been outstanding with our three younger sons in the Juniors class. They've shown genuine patience, guidance, and consistency that's made a big difference in our kids' confidence and skill. Over the summer, my partner and I started attending the adult Gi and No-Gi classes, and it's been just as rewarding. Having taken Jiu-Jitsu classes at UFC Gym before, I can honestly say Coach Jason's teaching style stands out -- he breaks down the techniques in a way that just clicks and makes sense. If you're looking for a place to really learn Jiu-Jitsu in a supportive, family-like environment, Calabrese Combat Academy is where you want to be.

Jason is one of the best coaches I've encountered I have 2 of my kids that go to him for jiujitsu…read moretraining and my 3rd will be there when she's old enough. If you want top notch education in tandem with great people skills and coaching ability Jason is your man. I personally am 41 and starting as a white belt under Jason and so far the experience has been amazing he will take his time with you at whatever level you come in at and always give you the respect and space to learn. He gives you two free classes! What is there to lose give the Calabrese academy a try!

We have been apart of the Gracie Barra family for 11 years. We joined Aloha stadium a year ago when…read morewe moved here. If you want to genuinely feel that Gracie Barra one team one family vibe this is the Gracie Barra you need to go to. Professor Justin went above and beyond to make my kids feel welcomed and a part of the family. We tried another Gracie Barra on Oahu on their opening day and we did not feel welcome. Aloha Stadium upholds all of the Gracie Barra philosophies, curriculum, and uniform policies. It's extremely professional and really upholds the Gracie Barra way. My children do Jujitsu to help them become better people, learn how to defend themselves, and learn how to get back to their community and they learn all these things here at Aloha Stadium.

I visited Oahu on vacation at the end of June / early July of 2025. I had time to squeeze in a…read morecouple of training classes. I contacted the school in advance and was able to visit and train with them. My 10 yr old son was able to go and train once with the juniors while we were on the island. The school / students were all very welcoming to us. From the instant we stepped onto the mats, we felt like we belonged there. I glad I went as Prof. Justin James pointed out a couple of things I needed to improve and then went about teaching me how to do that. All in all, I highly recommend this school to either join as a regular student, or visit and train with them when in town.

UPDATE! I'm not sure how or why, but my message about my…read moreexperience trying to sign up at the UFC Gym must have reached the right people. I received a call last night offering me the deal exactly as it was originally presented--no extra conditions or changes. I'm really happy and feel like they made things right. Today... I'm heading in to break a sweat!

I've been a member since Covid and frequent this gym 5 or more times a week. Coach Justin targeted…read moreand acted in a hostile manner towards me yesterday. He acted unprofessional and due to this incident I feel unsafe to return. He violated my privacy and rights with regards to HIPPA. I brought the incident to Marie in management to resolve this issue but she was dismissive and pre occupied with her phone. She let me know that she would discuss it with him at a later time. Due to the nature of his disrespectful behavior I would have hoped I was met with more compassion and sense of urgency in conflict resolution.