CrossFit South Brooklyn

Here is the original flyer from 2007 announcing the gyms launch in St. Mary’s playground. handed these out at the Carroll Gardens farmers market and put some up in nearby businesses hoping someone would see them and check us out. No one ever showed up because of these flyers and it was the last time we put any money into advertising. Luckily, people found us through .com and continue to join CFSBK through informal referrals from current members and searching for online. Our philosophy has been to focus on the quality of what we do inside our walls and let interested people find us based on the reputation we’ve built.

Ever since first walked through CFSBK’s doors in 2017, she’s brought her energy, dedication, and a whole lot of strength – making our community all the better for it. Originally from Seattle, she first found CrossFit in 2016 while searching for a way to push her limits. A well-timed invite from a longtime member (and Strong Sets host!) Maria Heinegg brought her to CFSBK, and she’s been a cornerstone of our gym fam ever since.

A trombonist and singer of “buoyant charm” (as accurately described by Nate Chinen, The New York Times), Emily brings that same spirit to the gym – whether she’s powering through a workout, sharing her love of music, or perfecting the art of napping and popcorn-eating (her – and this author’s – dream AMRAP). CFSBK has been her second home through major life changes; in return, she’s made it a better place with her presence.

Emily, we’re so lucky to have you in our community – congratulations on being our February Member of the Month! Read the full interview by on CFSBK.com

Originally from Bangor, Maine, and raised in Cranston, Rhode Island, journey has taken him coast-to-coast – living in Seattle, Houston, San Francisco, and Washington, DC – before landing in Brooklyn in 2021. Seth joined CrossFit South Brooklyn in early 2022 after trying bouldering for a bit and has been a consistent presence ever since, showing up to class 3–5 times a week (when the stars align!).

What keeps him coming back? “The coaches and the community! This place is AMAZING.” Seth has made lasting friendships at the gym and loves the blend of challenging workouts and expert coaching. He credits CFSBK with helping him stay strong and healthy, and, as he puts it, “aging gracefully.” Not to mention, he’s still hitting PRs and has some very enthusiastic support from his wife!

Read the full interview by on CFSBK.com
Unhinged photoshop by .maranothanks

As we close out the year, we’re celebrating Keith’s nearly 14-year journey at CFSBK – a journey that began with a Spartan race and has grown into a lifelong pursuit of strength, resilience, and community. From crushing a 330-pound back squat (a remarkable increase from his starting 115 pounds), Keith’s dedication to his fitness is truly inspiring. A cornerstone of our gym, he’s always present at events and eager to support his fellow members, both inside and outside of SBK. Read the full interview by on CFSBK.com link in bio. Congrats Keith!

In actual good news, our November Member of the Month is ❤️Whether she’s lifting heavy, cheering on her friends, or getting wacky in Fight Gone Bad costumes, Olivia brings energy, strength, and heart to our CFSBK family. We couldn’t be prouder to have her under our roof. Congratulations! Read her full interview by on CFSBK.com in Tuesdays post and drop her some love in the comments.

✨Magical vibes while leads breath work during today’s Wim Hof Method fundamentals workshop. 😮‍💨🧊🧘‍♂️

Huge thanks to everyone who participated in our 15th annual Fight Gone Bad event. We raised an incredible $32,316 for and had a blast doing it. Above is the group shot by .shoes.media and team portraits by More pics from the event can be found on our Flickr. link in bio

Amazing news for everyone registered for Fight Gone Bad! Our besties at are hooking up everyone who raises $100 or more for

Would you like your dog to be featured in the 2025 CFSBK x Pupstarz calendar? Please take a picture of your pup at the gym and email to [email protected] by October 20th for consideration. Please only send one picture and include your dog’s name, birthday and age.

is an animal welfare group committed to the rescue and rehabilitation of dogs and cats in public shelters at high risk of euthanasia, as well as those in danger of abuse. We are committed to rescuing as many animals as possible, saving over 3,800 dogs and cats since 2015.

Just like school, our Member of the Month feature is back in session. This October, we’re thrilled to spotlight a dynamic trio: Leo, Phil, and their adorable pup, Banksy! Since joining CFSBK in 2014, Leo and Phil have become integral parts of our community. Read the full interview on CFSBK.com!

Today is CFSBK’s 17-year anniversary! Since its inception, this gym has been a labor of love, with the intention of building world-class community and empowering people to be fit—all while being kind of weird and fun about it. Thank you SO much to everyone who has kept this going for so long. We are the sum of our parts and everyone who has ever walked through our doors should take some credit in making this possible. If CFSBK has played a positive role in your life, please let us know in the comments!

Check out today’s blog post on CFSBK.com to see some throwback videos from our early days with in the park to what we have collectively built today.

Registration is live!!! Link in bio under EVENTS
Join us on Saturday 10/19 to celebrate and suffer through our 15th annual Fight Gone Bad charity event! This CFSBK tradition has raised over $440,000 for a variety of amazing causes through the years. This year we will again be partnering with Brooklyn Community Housing & Services