BT
Black Twenty One
Boxing with grit, coaching, and a welcoming community.
5
Doctor
$$
Boxing with grit, coaching, and a welcoming community.
Black Twenty One is a Denver boxing and kickboxing gym at 1870 S Acoma St, Denver, CO 80223. It blends sport-club energy with a welcoming fitness atmosphere. Guided by coaches like Alejandro (with Mike as well), classes are small and personalized, nourishing a judgement-free zone for all levels. Members report empowerment, steady technique growth, and a hard-working, enjoyable workout.
No photos available
Structured group sessions focusing on technique, combos, and conditioning for all levels.
Dynamic workouts blending boxing and kicking techniques to enhance agility and strength.
One-on-one attention from experienced coaches for individualized skill development and goal-setting.
Corner support and tailored training for competitive fighters preparing for matches.
Patient instruction for newcomers to learn proper form and build confidence in a supportive environment.
Engaging activities that foster camaraderie and a motivating atmosphere among members.
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Overall rating
Marion Brown
I’ve been training at Black Twenty for over two years now, and I can confidently say it’s an outstanding gym. The level of instruction in both boxing and kickboxing is top-notch you truly learn proper technique, from solid offensive combinations to strong defensive fundamentals. The coaching is what really sets this place apart. The owner is not only knowledgeable and patient, but he also knows how to push you to improve every single day. He takes the time to make sure you understand the fundamentals while still challenging you to grow. Beyond the training, the atmosphere feels supportive and genuine. It’s the kind of place where people look out for each other. In fact, the owner once even helped me change a flat tire something he absolutely didn’t have to do, but it shows the kind of person he is. If you’re looking for a gym that builds skill, discipline, and community, Black Twenty is the place to be.
Michael Hering
An excellent facility with excellent trainers, Alejandro and Mike. Can't reccomend this place enough.
Miguel Mendoza
What's the price to sign in?
Grant Johnson
Alejandro and Mike are passionate about helping you reach your goals whether that's to win a fight or just learn the fundamentals of boxing while getting a great workout in. This gym is a judgement free zone where anyone from experts to beginners can feel comfortable. I had zero prior boxing experience and I have found a hobby I plan to do for the rest of my life. The classes are small enough that you will always get some individual coaching and attention. The prices are fair and the instruction / experience is very worth it.
Ryann Dominguez
This place helped me get my GRIT back during a really hard season of my life. Alejandro is not just an instructor, but a coach. Working with everyone individually at their own levels but keeping a strong foundation of the flow of class. I leave every class feeling empowered and like I won the day! Happy to be part of this community they are building at Black Twenty One. If you're looking for a true boxing experience, look no further. This is it!
David Wexler
I’ve been attending classes here for about a month, and I Iove it. I am older and have always been intrigued by boxing and felt like I needed a workout to help with my reflexes and agility. This has been the perfect fit. It’s no nonsense. Just hard work at a fast pace. Alejandro is very patient especially with someone like me who had no experience and who might take a little longer to learn the proper technique and correct combinations. Highly recommend checking this place out
