I have been bringing my son here for about 8 months and I have seen a great improvement in my his…read moreoverall attitude towards others and himself. His confidence has gone up and we are so grateful to the Gracie team here in Riverside for all the help they have given and the compassion shown is astounding. I am excited to see the young man he becomes with the help and guidance from all these amazing coaches and his peers.

I have been training with Gracie for about 2 months and it is awesome. They offer a women's only…read moreclass on Saturday mornings at the Riverside location. All of the ladies are great. We are bonding and making our friendship better each weekend. I was able to gain the comfort and confidence with my training partner/ friends and coaches and also began trying out the mixed classes during the week nights. If your looking for a place to learn some great skills and friendship, come join us. All of the coaches are great. Be ready for a nice full body workout. See you soon :)

Great gym for the whole family. Found the perfect place where the whole family can learn, train and…read morehave fun. It's clean and coaches care!

Both of my kiddos were attending the kickboxing class and thoroughly enjoyed it. They both learned…read moremoves they were glad to know how to defend themselves if they need to.

Another year has past and I am still proud to be part of the amazing and accepting Gorilla family!…read moreFrom the amazing leadership from the dedicated coaches to the motivated and eager students. The lessons learned here go deeper than just self defense. Oosss

Killer Brazilian Jiu Jitsu here! If you want to win tournaments, this is where you train.read more

Sam is an incredible instructor. My daughter and I have trained here for a few years now. Sam's…read moretraining never disappoints. He is thorough and patient and always integrates important lessons into his training. If you were looking for a place to train either jiu-jitsu, or Muay Thai... I highly recommend

As a parent, you're always hoping to find "that one thing" your kid connects with. For us, that…read moreturned out to be Marcellini's Martial Arts Academy. Before Jiu Jitsu, we tried several activities, but nothing really stuck. Our daughter felt shy and uncomfortable in most environments. From day one here, Sensei Sam made her feel welcome and part of the group. That care and encouragement meant everything. Now, three years later, the change is incredible. She's more confident, more focused, calmer, and makes better decisions. Her social skills have improved so much, and she's not afraid to step into new situations anymore. She carries herself differently -- stronger and more self-assured. And the best part? She absolutely loves going. This isn't just martial arts training -- it's character building, teamwork, and life skills. We're very grateful we found this place. Highly recommend to any parents considering it.

My son who is now 10 has been training at this gym since 2025. Jiu jitsu is a challenging sport and…read moreI think it is good to have my child in something that challenges them daily. After being on the sidelines for about two months watching him practice, I decided that it would be good for me to join as well for my own well-being but also for a way to bond and connect with my son. I've been training since June 2025. The friends I've made since joining the gym have been amazing. Once you get yourself established, you will be amazed about the community of people. People from all walks of life train at this gym. It is friendly. It feels safe. It's clean, which is important, and it's just a great time. Even after an hour and a half of getting smashed, I get my car with a smile on my face Looking forward to going to class in the next day. I certainly suggest anyone who's interested in the sport of Jiu Jitsu give this gym a try.

They were previously called Sector Jiu Jitsu, but made a name change. Everyone at this place is…read moresuper friendly and very helpful. My daughter came from a different academy and switched here a few months ago, and I can definitely see the improvement in her abilities! And for the parents with kids in charter school, they do take charter funds! Definitely check them out!

This gym welcomed me with open arms !! All coaches and…read moremembers are friendly and easy to get along with and always trying to help each other out. The kids class is amazing !! Really fun !

I like this place -- you'll definitely be well received there and learn an art that will change…read moreyour life.

Matt has a great place to train here and it's the coolest gym I've ever been to in terms of…read moreequipment and ambiance. MMA and weightlifting and racquetball and even fencing

My family has been part of this gym for the past three years. My wife does the morning kickboxing…read moreclass and we all participate in Jiu-Jitsu during the evening classes. We've competed and have had great results. This isn't your typical gym it's more of a family/community of like minded individuals coming together to make each other better. Stop by and get some reps in.

My son has been a student here for several years. I am thoroughly impressed with the professor. He…read morehandles the kids with respect and he demands respect in return. My son started here with zero experience and he was very uncoordinated. He has transformed into a great athlete and is very confident in his skills. I am thoroughly satisfied.

My son had been looking to get back into martial arts so we checked out this place since it's…read morearound the corner from us. The owner is incredibly nice and honest! Our son has been coming here for 3 months now and loves it so much. He looks forward to going everyday and has met some great friends. Highly recommend!!

This is a great gym for families. They do not have any hate symbols outside. They have a contract…read morewith a charter school and work with many children. The main instructor is an MMA fighter and he has many years of experience in martial arts training. No other gym in Riverside has the qualifications that Original grappler training center does. Bring your kids and get a free trial!! My kids have been taking Jiu Jitsu classes for years and they love it!! Try the free trial. You can just walk in and request the free trial and start right away. You won't regret it.

This is a great place to learn to grapple, wrestle, and kickbox. I called other gyms to see if I…read morecould try them out, but they only allowed you to come once before charging you. Here, they weren't pushy and they allowed me to come a few times. It feels like they are a family but are also willing to take in newcomers who are willing to put in the work. The coaches here are badass and motivational, and at the same time, they don't have that 'better than thou' mentality. I'm loving it so far and looking forward to continue my journey here at OG Grappler. Shout out to Coach Israel and the rest of the dudes! I definitely recommend this gym for anyone who's looking to start or to continue to getting down!

Our family loves Crown. So many class times for kids, amazing professor and coaches who know how to…read morework with kids of all ages, skills, and developmental stages. The environment at Crown is so welcoming and family oriented. Our son loves coming to class where he is challenged daily, learns new skills, builds stamina, and sees the fruits of hard work and discipline. We are truly thankful to have found this gem in Corona!

This place has been a true blessing for my 10 year old son. We've been here for a year and a half…read morenow, and the mental and physical growth my son has experienced is something I couldn't be more proud of. We come 4-5 days a week, religiously. Wrestling, kickboxing, gi and No-gi jiu jitsu, and judo...take one class or take them all. It's up to you. It's a great mix up of martial arts.