CrossFit NYC Flatiron — Manhattan’s Original Functional Fitness Gym
As the oldest CrossFit gym in the world (established 2005), we’ve helped thousands of New Yorkers — from complete beginners to competitive athletes — get stronger, move better, and feel more confident in their bodies.
We know everyone has different objectives and starting points, so we encourage all our members to choose a training path that best aligns with their goals.
Think of it as choosing a major in college — and of course, you can always switch as your needs change.Here are the areas you can major in:
CrossFit (Classic)
As the oldest CrossFit affiliate (est. 2005), more people have started CrossFit with us than anywhere else in the world.
CrossFit training develops all ten components of fitness: cardiovascular endurance, stamina, strength, flexibility, power, speed, coordination, agility, balance, and accuracy.
Our CrossFit (Classic) classes follow the CrossFit ideal — “we specialize in not specializing” and train all fitness domains.
The trade-off is that they require practicing technical skills (gymnastics, Olympic lifting, etc.).
We recognize that not everyone enjoys (or has the time for) mastering new skills, so we also offer more specialized tracks (see below).
Our CrossFit memberships give you access to our CrossFit (Classic) classes plus all our specialized classes: CrossFit (ATHX), CrossFit (Hyrox Metcon), CrossFit (Strength), and Olympic Lifting.
New members must complete CrossFit On-Ramp (think of it as “freshman orientation”) or show equivalent experience before joining our CrossFit (Classic) classes. CrossFit On-Ramp is not required for our specialty tracks.
CrossFit (Hyrox Metcon)
These classes are inspired by Hyrox and focus primarily on strength, stamina, and cardiorespiratory endurance.
We offer one of the most extensive Hyrox training programs in the city, with over 20 classes per week, including 90-minute classes on Saturdays. We routinely offer full Hyrox Race simulations. Over 200 of our members completed Hyrox NYC 2026.
There are no technical movements in these classes — no barbells, no gymnastics.
An optional Hyrox On-Ramp (two 45-minute private training sessions covering all Hyrox movements) is available but not required. Most people can complete the full workout on day one.
CrossFit (ATHX Training)
CrossFit (ATHX training) is based on the ATHX Games, which have grown rapidly in Europe and are now expanding in the United States. CrossFit NYC Flatiron is the Official Regional (US) Hub for ATHX.
We see ATHX as the sweet spot between Hyrox and CrossFit: fewer technical movements than CrossFit, less running than Hyrox, and a greater emphasis on strength than Hyrox.
These classes do not require an On-Ramp program. For those new to basic barbell lifts, we offer a free one-hour intro class covering the fundamentals. ATHX memberships include Thursday CrossFit (Strength) classes.
CrossFit (Strength)
Our CrossFit (Strength) classes focus strictly on building strength. They primarily use basic barbell lifts — squats, presses, and deadlifts — plus targeted accessory work for muscle growth, mobility, and injury resilience.
For those unfamiliar with barbell lifts, we offer a complimentary one-hour intro class that is sufficient for getting started with either CrossFit (Strength) or ATHX training.
This track is ideal for those whose main goal is building strength and muscle.
Olympic Lifting Basic Olympic Lifting
Olympic Lifting is the most technical aspect of CrossFit. Our program is led by Brian DeGennaro, an original member of CrossFit NYC who has competed in and coached Olympic weightlifting at a high level for over twenty years.
Brian has taught over 15,000 classes at CrossFit NYC. He holds a B.S. in Exercise Science, is a USAW Level 2 Coach, and runs our Black Box Barbell (competitive lifting) program.
If you have some experience with the Olympic lifts or have completed CrossFit On-Ramp, you can join Olympic Lifting classes with a regular membership or as a drop-in.
Private Training
You can train privately with our experienced Flatiron coaching staff for personalized guidance tailored to your goals.
The best way to get started is to schedule a call with Hari Singh, owner and general manager of CrossFit NYC.
He’ll listen to your objectives and availability and match you with the best coach on our team.
Join Our Vibrant Fitness Community
At Flatiron, you’re not just joining a gym; you’re becoming part of a vibrant and supportive fitness community. Connect with like-minded individuals who share your passion for health and fitness. Our friendly environment fosters motivation, accountability, and camaraderie, making each workout enjoyable and rewarding.
Hear from Our Members
Don’t just take our word for it—see what our members have to say about their experiences at Flatiron. Our members achieve incredible results and enjoy their fitness journey with us. Read their testimonials to learn more about how Flatiron has made a difference in their lives.
Expert Guidance from Our Trainers
Our certified trainers at Flatiron are dedicated to helping you achieve your fitness goals. With a wealth of experience and a passion for fitness, they provide personalized guidance and motivation to ensure you get the most out of every workout. Meet our team and find out how they can help you succeed.
Hari Singh
I am one of the founding members of CrossFit NYC. I became an owner in 2007 and sole owner in 2019. My background is not in fitness. I have a BS in Electrical Engineering from New York University and an MBA from Columbia University. When I joined CrossFit NYC, I was CEO of two midsized companies on Long Island: Dairy Barn Stores (then a chain of 60 drive-through convenience stores) and Oak Tree farm Dairy (then one of the two remaining milk processing plants in NY State south of Albany). I am 66 years old and do CrossFit an average of three days per week.
CrossFit is not a franchise. Affiliates owners have significant flexibility in how they run their businesses. The public image of what CrossFit is comes from a blend of 15,000 CrossFit affiliates and millions of CrossFitters. My job as owner and general manager of CrossFit NYC (now the oldest CrossFit affiliate in the world) is to take what is best of the CrossFit methodology and make it work in Manhattan. To accomplish that objective,I have assembled what I believe is the best team of coaches in this city. I have given them the facility, the space, the resources, the equipment, and the support they need to improve the fitness of anyone who is willing to put in the work.
Brian DeGennaro
Brian’s athletic career began in high school, where he trained in gymnastics and competed in track and field (and became one of the original members of CrossFit NYC). Brian graduated from Syracuse University in 2012 with a BS in Exercise Science. He has been a full-time member of the CrossFit NYC coaching staff ever since. He has now coached over 10,000 classes at CrossFit NYC.
For the past twenty years, Brian has trained and competed in weightlifting. He also runs Black Box Barbell, an Olympic Lifting specialty program at CrossFit NYC. He has competed at numerous local and national events, earning some national medals along the way. Brian has trained many athletes to compete at local competitions, qualify for national level events, earn Master National medals, and set state Master records.
Brian typically coaches classes at CrossFit NYC Monday thru Thursday late afternoons and evenings.
If you are interested in the Black Box Barbell program or training privately with Brian, he can be reached at [email protected]
Credentials
B.S. Exercise Science
C.S.C.S.
USAW Level 2 Coach
CrossFit NYC Senior Coach
Manhattan Barbell Club Coach
Jim McDade
Jim’s athletic career began early in life with soccer and baseball. In college, he competed as both a pole vaulter and as a heavyweight rower. After college he continued to compete, having reached elite levels in rowing (2K row @ 6:16, 5K Row @ 16:46) and in cycling (Cat 2).
Jim opened CrossFit 212 in 2011 and sold it in January 2020. He competed at the CrossFit Northeast Regionals in 2011, 2014, and 2016, as a member of the CrossFit 212 team the first year and as the team’s coach the last two years.
Jim has a BAS in Exercise Science from University of Delaware and an MBA in Entrepreneurial Studies from Baruch College Zicklin School of Business. He was formerly a Certified Strength & Conditioning Specialist with the National Strength & Conditioning Association before switching to CrossFit.
Jim coaches and is available for private training at both CrossFit NYC locations.
Ben Koretz
Ben is a senior coach at CrossFit NYC who joined the coaching staff in 2012 and has since taught well over 10,000 classes.
After graduating from the University of Hartford with a degree in accounting, Ben transitioned from a corporate career into full time coaching, bringing a disciplined and technical approach to training. His athletic background includes high school wrestling, CrossFit competition, Olympic weightlifting, Hyrox, and endurance events including the marathon and ultramarathon.
In his 30s, Ben underwent a major body recomposition, losing over 30 pounds, which allows him to closely relate to members focused on long term weight loss and sustainable fitness. He is especially known for coaching high skill CrossFit movements such as muscle-ups, gymnastics, double unders, and Olympic lifts.
Ben coaches morning classes Monday through Thursday at 6:00 AM, 7:15 AM, and 8:30 AM and can be reached for private training at [email protected]
FREQUENTLY ASKED QUESTIONS
We are NYC’s original CrossFit gym—the oldest in the world. Our coaching, programming, and community have been refining elite fitness since 2005.
Not at all! Our coaches will guide you through proper technique, modifications, and progressions to ensure a safe and effective workout.
At CrossFit Flatiron, we offer CrossFit, Hyrox training, and Strength Training—each designed to push you to your peak.
Absolutely! We welcome drop-ins and visiting athletes. Book your session online and train with NYC’s best.
Just comfortable workout gear, water, and a positive mindset. We’ll take care of the rest.
Yes! Members have access to open gym hours where they can train independently with full use of our top-tier equipment.
Sign up for our On-Ramp program if you’re new to CrossFit, or jump into a class if you have experience. Either way, we’ll set you up for success.
While most members take public transit, there is a parking garage just 50 feet from our location for those who drive.
We offer flexible membership options for unlimited training, class packs, and drop-ins. Check out our pricing page for details.
Yes! If you’re interested in Hyrox, you can book a free trial class. For CrossFit and Strength Training, our On-Ramp program is the best way to get started.
Find Us and Get Started
Located in New York, NY, Flatiron is your destination for top-notch fitness.
Get StartedFlatiron
Monday: 6AM–8:30PM
Tuesday: 6AM–8:30PM
Wednesday: 6AM–8:30PM
Thursday: 6AM–8:30PM
Friday: 6AM–7:30PM
Saturday: 7AM–2PM
Sunday: 9:30AM–1:30PM
Fuel Your Training, Master Your Nutrition
Your time in the gym is only part of the equation—what you eat fuels your performance. Download our Athlete’s Guide to Smarter Grocery Shopping and learn how to stock your kitchen for strength, recovery, and long-term health. Make every meal work for your goals!