If youre looking for a perfect gym get down here asap 24hr access for everyones busy schedule. Plenty of free weights and machines. Able to accomplish so many things that were limited at other gym due to their lack of equipment. Staff always goes above and beyond thank you.

Super friendly and helpful coaches! Good gym with good people!

Amazing gym. I come for the great fitness program and the people, but I stay for the music ;)

Amazing gym, gorgeous facility, awesome and very involved and honest owner, great staff, great community. Socially distanced and safe. This gym has kept me sane throughout this pandemic. Such a supportive and upbeat environment that makes me grin from ear to ear leaving every day. They push you but are also so understanding of any limitations and very helpful with modifying the workout to your ability! Can’t say enough good things. Go check it out.

Always have a great experience. Staff are super friendly! The bartenders are the absolutely best. Love their lemon drops and food!

This is CrossFit at its best.Excellent coaching.Excellent programming.

Took a trial class. Awesome! Aaron is a great coach!

Great place a lot of pro bodybuilders have come thru here

If you like to challenge yourself and be motivated by others, then this is the place for you. I have been a member for 6+ years, far longer than at any other gym Ive ever attended. At traditional gyms, I had a hard time pushing through the motions of doing the same exercises week by week and would eventually stop going due to disinterest. At Guerrilla Fitness, I religiously go five days per week and my day does not feel the same without it. I am capable of doing exercises and lifting weights that I didnt think were possible before. The coaching is second to none, everyone knows one another, and everyone pushes each other to be better by the time you walk out than you were when you walked in. I cant imagine myself at any other gym.

Super clean, healthy environment, and amazing staff

There is no need to feel intimidated by the workouts-- you can always scale them down. (Believe me..I know). If you want to meet new friends and family, and challenge yourself with workouts..you should definitely check this place out.

Amazing owner, staff and community. Spotless and following all safety guidelines during this pandemic!

This place is life changing! The coaches, the members, the facility!!! Everyone needs to join Guerrilla! It’s worth every single penny! It’s my favorite place to be, my home away from home 💪🏼 The coaches are so supportive and so friendly, they truly want you to be better. The owner Gregg, he’s wonderful! Such a positive community that I’m so proud to be apart of!

The best decision I made! Moved to NJ four years ago and searched for a box that felt like home. I found that and more Guerrilla Fitness Montclair. My first introduction was at a 5:30 (AM!) class with Ayo, and Ive been hooked ever since. The camaraderie and attention is the best. The attention given to your form, function and well being is fantastic. But above all the people I have met have provided me with the community I was searching for. It has been a pleasure and and an honor to know these folks.

Guerrilla Fitness has been my good to me this past year and a half. Not only have I learn so much from my coaches and peers, I learned a lot about myself and capabilities. Spirit week, was one of my favorite community event(s) . It was a great week where all the members got together as a community to do fun activities, such as bowling, running a mile, and even preparing healthy dishes to support a great cause for the gym . Even though it was a competition, Guerrilla Fitness made it into a fun, friendly and family event, and that is exactly what Guerrilla Fitness represent . August will make it my two year anniversary here and I dont see myself going anywhere many years to come.

As a gym, Guerrilla Fitness serves in an exceptional capacity; it checks all the boxes off: great environment, phenomenal coaching and programming, welcoming to people from ALL walks of life and varying levels of fitness, incredible energy brought day in, and day out. They make it an outstanding experience for everybody. But, to end it there would be a great disservice, as Guerrilla Fitness is so much more than a gym to SO many, including myself. Over 9 years, it has become family to me. The passion, and care, and personal touch that their team puts out on a daily basis to make sure each member receives the very best experience is nothing short of remarkable. No matter where you come from, I encourage you to give them a shot! You will not be sorry!

After 18 months, I am so pleased with my experiences at Guerrilla. It is more than just going to the gym, the Guerrilla team have helped me achieve so many of the goals I had set for myself and achieve other milestones I never planned on.The best part is that after 18 months, I dont get bored or feel I have to change up a routine. The Guerrilla team are always looking for new ways to challenge us.

Guerrilla Fitness is truly a fantastic place to become a better version of yourself. The head coach Ayo gives amazing individual attention and is a top notch teacher and an even better person. Highly recommend!

The best OG Crossfit gym in NJ

This place is more than a gym...it is a family. I have been a part of this gym for just over 2 years and I love it. Every skill level is welcome here. The coaches make every effort to get to know you and encourage you on your fitness journey. There is no need to feel intimidated by the workouts-- you can always scale them down. (Believe me..I know). If you want to meet new friends and family, and challenge yourself with workouts..you should definitely check this place out.

I’ve been here for over three years now. Hands down the best physical fitness experience in terms of results and community. I’m healthier and physically stronger now (as a Black woman of a certain age) than I was in my 20s. 🙌🏽💪🏽 Can’t wait to see what the next 3+ years bring!

Guerilla Fitness is a great CrossFit Gym! Greg and his team of coaches do a wonderful job of creating a friendly and safe environment for all the members. Each class gives me a great challenge and gets me ready for my day. All the coaches are particular in watching me and other members make sure we complete movements with correct positioning and monitoring our exertion. I feel very fortunate to have found such a great place where I can feel like an athlete and perform well even though Ive never felt athletic my whole life. I look forward to my workouts there and watching myself surpass what I thought I could do a few weeks earlier. If you are looking for a Cross Fit Gym, I highly recommend coming here!

Life Changer. I am grateful for our gym and all of the awesome people in it. Especially Ayo—he is the greatest coach and mentor and has helped me learn and grow in ways I didn’t think possible! I have been a member for about four years, joining guerrilla was one of the best decisions I have made!

I’ve been a member for 10 years, and it keeps getting better every day! Superior coaching, superior programming, and an outstanding community. All CrossFit gyms are not built the same, I’m proud to belong to the best. We are Guerrilla Fitness, we are #BetterTogether.

Guerrilla Fitness is truly a fantastic place to become a better version of yourself. The head coach Ayo gives amazing individual attention and is a top notch teacher and an even better person. Highly recommend!

I’ve been going for over 10 years now and it has just become part of my daily routine. The programming keeps it new and challenging and I trust the coaches as they always focus on form and function first. Overall, excellent gym and community

Coaches are friendly, knowledgeable and offer personal attention and the members are welcoming and encouraging.Head coach Ayo is extremely knowledgeable and detail oriented. He provides programming that is effective and challenging with enough variety that has members looking forward to coming to each class.Ayo provides a safe, fun environment while ensuring that each client’s best interests and goals remain the priority. Following his program you will definitely progress and see the results you hope for.

Never thought I would do crossfit. 4 years later still a member here. Great coaching, great atmosphere. Highly recommended.

A great gym. Ive been a member for over four years and I cant speak highly enough of the head trainer Ayo Falae. He has tailored a work out program for me that has enabled me to maintain the active lifestyle Ive always led into my 60s.

Ive been a part of the Guerrilla family since November 2008 and it has an awesome community. Guerrilla Fitness has great coaches and the programming is challenging.

This gym has quality coaches that are committed to good form and take feedback on their playlists. The classes have always had great energy (big ups to the early morning crew) and a diverse welcoming membership.

Ive been a part of the Guerrilla family since October 2008 and theres no turning back. For some, CF might not be their cup of tea, but my cup runneth over and then some! Guerrilla Fitness is THE place to not only get in shape but to push your limits / compete against yourself and maybe the guy or gal next to you.The programming is amazing ( I really wonder how they do it) and the coaches are top notch!

I was always intrigued at the prospect of joining a crossfit gym and when I moved a few blocks away from Guerrilla, I knew I had no more excuses. I was no stranger to a gym but really had no idea how much of a game changer to my overall fitness crossfit would be. But you hear rumors sometimes about gyms and people getting hurt. Well that is far from the case at Guerrilla where the coaches observe everyone and makes sure that your technique and form is superb and encourages you to be a better version of yourself. Theres never any pressure and its a very family friendly environment. Come one come all!

Love Guerilla! The coaches are amazing. My kids also go to train during their sports offseason! It’s a great place for the whole family!

I love all my coaches Ayo and April along with everything else about this gym. It is amazing.

I joined Guerrilla almost one year ago at the suggestion of my friend. I wanted to add weight lifting to my exercise routine but found lifting at a regular gym on my own was boring and I didn’t know what I was doing. My friend said I would love Montclair Guerrilla. She is a longtime CrossFitter at another gym who knew of Montclair because it had a reputation for being the best. I was hesitant to do CrossFit because I wasn’t sure I could do it....I had no idea what a snatch or clean was or what AMRAP or EMOM could possibly mean. But I decided to give it a try because I wanted to learn and grow, I wanted to get stronger and the workouts looked awesome, especially with the inclusion of gymnastics moves. From the first day I walked into Guerrilla, I loved it. I loved how the gym was set-up and all the equipment available, I loved the atmosphere - the coaches are awesome, form is the most important thing to them, and they encourage me to believe in myself and my abilities. The workouts are different every single day, so there is no way to get bored at Guerrilla. There is always another level to work towards. The coaches create such a great supportive environment that all of us in class follow their lead and are supportive of each other. Together we are better! There is no end in sight for the goals I can achieve at Guerrilla and my personal growth along the journey.

As the first Crossfit gym in NJ, this place continues to improve its facilities, coaches, workouts and services. All without really raising the cost. An added plus, is its attracted some really cool people of all ages, shapes and sizes to work out with which creates a phenomenal culture and community.

I’ve whatched the gym grow in many ways than I could possibly share. Terrific place with great people.

Best gym in the area! The coaches are second to none, so knowledgeable and so encouraging. I’ve been through many stages with Guerrilla as my home gym; working out here post knee surgery, while pregnant, postpartum, AND while training for the Brazilian jiu jitsu IBJJF Masters World Championship. You cannot get that quality from just anywhere.Not only are they of the highest quality, they’re also just really nice people.

Awesome gym! Great coaches and people.

Small parking lot but street parking should suffice. Great staff and they dont push you to the point where you hurt yourself. They always focus on your form.

This isnt just a gym. Its home. This space bleeds authenticity; from the physical look that gives it that gritty feel, to the people that make you excited to get back and work on getting #BetterTogether, to the programming that literally makes that happen, the people that call Guerrilla Fitness home know it to be more than JUST a Crossfit box.

Awesome community and super helpful coaches. One of the best gyms Ive ever been to.

Loved it cant wait to go back

The staff here are top notch. They know what they are talking about and are always looking to improve.

Amazing coaches and team atmosphere.

Great gym, great community.

Great Coaches, Great Atmosphere....Love this place!!!

Best gym in the world.

They take out the fiber