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July 2025 by Nathan Cooper
This is my dream gym. I had dropped in from time to time over several years and recently joined full time after moving to the area. It really stands out in three areas: 1) The coaches are really expert and can unlock progress in a lift or movement with a few words. They're seriously on another level. 2) The space is so generous, and the equipment is abundant. It's all just thought through really well and reflects years of refining what a crossfit environment should be. 3) The community is incredibly vibrant and dedicated. They strike a rare balance of inspiring with their abilities and commitment while also being accepting. Can't recommend highly enough.
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June 2025 by Keaton Wetzel
Finest CrossFit gym I’ve ever attended. And I’ve been to many!
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May 2025 by A Scott
If you have the opportunity to be a part of this Fitness community, sign up immediately! I joined wanting to find community and I feel so comfortable in this space! David, the owner, is kind, open and so supportive! All of the coaches are rooting for your success! And this may or may not matter to some people, but the Gym is very inclusive – there are all types of bodies, women, respect to the LGBTQIA plus community, mothers, elderly, pets! Everything. Five stars! David has created something really special!
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May 2025 by Laura Berk
I've been a member of CFSBK for 4 years - the coaching and community are, hands-down, the best I've experienced of any gym I've been to in my 8 years of doing CrossFit. The staff is dedicated, passionate, knowledgeable, and supportive in helping people on all different fitness journeys with their specific needs and goals in the gym. I've made some of my closest friends at CFSBK - the atmosphere is warm and welcoming!
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May 2025 by Cathy Kolcun
I’m a 7 year member at CFSBK and cannot say enough good things about this gym. David O and his staff created an inclusive welcoming and supportive community that makes this gym special. Every coach is invested in your safety, success and growth as an athlete. Coaches don’t sit on their phones and keep time. Each coach makes sure to interact with every member every class with lifting or skills cues. Every coach gets to know regular attendees so well they can ask about injuries or other reasons to substitute or modify the workout. Coaches who know you’ve struggled with a skill or lift will take care to watch your workout to support your success.
I knew I’d found my place and my people the first day I walked in. CFSBK is a special community that lifts people up. David does not tolerate any hint of exclusivity. He’s a model for how a box should look and run.
Coach Erick talking me through a 180 lb back squat PR and a 65 lb snatch PR during the Open. Could not have done it without him. The absolute best.
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May 2025 by Elie Zeitlin
One of the top CrossFit gyms in the world. David O is the man - great owner, easy to talk to and an overall cool dude.
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May 2025 by Karl-Henry Cesar
I’ve been a member at this gym for over a decade.
I love this place, and I love it because of the community.
And what is this community comprised of? Thoughtful, quality programming; thoughtful, quality coaching; thoughtful, quality event planning and execution; steadfast devotion to facility maintenance and improvement; and thoughtful, quality folks who also partake in the fun and challenging quest to get better a little bit every day.
Thank you CFSBK!
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May 2025 by Katherine Egan
I cannot say enough about the community that has been created at this gym! the best place to make friends and improve your overall well being both mentally and physically. classes are always fun, welcoming, and educational. what an amazing supportive environment!
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April 2025 by Cidney Falk
I was a member at CFSBK for 8 years and there is literally not a single CrossFit gym that I have been to in the US or abroad that can compare. The coaches are top notch, attentive, and give great cues. The programming cycles allow members to build skills and get strong, and also have good variability to keep you engaged. The space itself is very well maintained, HUGE, and receives regular cleaning several times a week. All machines and barbells are updated, organized, and kept in top form at pretty much all times.
I don’t know what the deal is with some random one star reviews but this place is special. The community is peak and that comes from exceptional stewardship from the owner and staff. Literally this place is a masterclass in how CrossFit gyms should be run.
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April 2025 by toni smith
Probably the best gym I have been to. From the owner and everyone involved. The coaches are professional and so welcoming to the members and drop ins.
The gym is cleaned daily, from the floors, to the rigs and equipment. I always recommend this gym. If I ever drop into another gym outside of CFSBK, I always mention my gym and the owner David. I typically find that people already know of David, the staff and the gym. And they also speak as highly.
10/10 recommend :)
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April 2025 by Juan Cho
Since my very first time at CrossFit South Brooklyn — back in June 2014, I've been grateful to find this place. The experience as a whole and the small details that make this place one of the greatest gyms in the world.
My first classes were with Mr. and Mrs. Fox and David Osorio. The question of the day, the order, the great programming, the neat execution of the class are some of the aspects I really enjoyed. However it falls short next to the location, culture and community that CFSBK has.
It has been developed for years. They have answers for pretty much everything. I remember one morning I was lifting next to one of the coaches — super nice dude – and I mentioned I enjoy a good craft beer and he pointed me to a place in the neighbourhood, so yeah, they have answers for everything.
The Skull [Jolly Roger], Yoda, the 2013 Open memorabilia and all the flags. Everyone is welcome at CFSBK. I met some great New Yorkers while training there every chance I’ve had while traveling. From photographers to chefs. The most awesome part is — the staff remains [almost] the same, and onm every trip i’ve seen David there.
CFSBK is and will always be one of my favourite spots to train, they inspired me to open my own box.
If you like to train, if you like great culture, a good time and nice people, this is your place. Regardless of your level. You can be starting your lifting / Crossfit era, or you can be elite athlete, this is a place where we all can thrive and i believe that's actually what they strive for. For you to thrive regardless of your level.
Go, fall in love, train hard, make friends, buy merch and then tell the story. Come back as much as you like, their doors are always open. Literally — they hardly ever close.
To the front desk lady back in 2014 that waited for me to get ready after a quick sesh because I was coming from a redeye flight and on my way to Vermont for an ultra-marathon: Thank you! You were the nicest — even took my picture outside the box. This memory sits on top of all the others at CFSBK.
Hope I get to come back soon.
Stay well!!!
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April 2025 by Emily Asher
I’ve been a member since 2017 and continue to feel incredibly grateful for this welcoming community with truly model leadership, coaching and supportive environment. Fitness, friendship and fun!
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April 2025 by Maria Heinegg
Been going here for 6 years now. The ops team is amazing, the coaches are excellent, the facility is great and the community is awesome. Love it here. Great workout, great people, one of the most conscientious business owners I’ve ever met. Couldn’t really ask for more.
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April 2025 by Leah DeCesare
I’ve been a part of this gym for nearly 8 years. I don’t even do CrossFit but I train here during open gym. The facility is HUGE, well maintained and I never have to wait to use equipment (granted I train during off peak hours but even when I haven’t it’s not been an issue.) During the better part of a decade I’ve been here I’ve seen the same faces coaching and taking classes; there’s clearly little turnover which I think says a lot about how the business is run. Everyone is super friendly and respectful. I could do my non-CF workouts at any gym, but here I feel safe and left alone (I tend to keep to myself when I train.) CFSBK is an institution in the fitness world for good reason.
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April 2025 by Ashley Gerber
this gym is poorly maintained. There is a creepy male coach who follows women around the gym and gets angry when you say “no” to him. I felt very unsafe and management refuses to do anything about it
