Black Twenty One
About
Black Twenty One offers comprehensive training in MMA, boxing, Muay Thai, and kickboxing for all skill levels. Head coach Alejandro Ayala brings extensive credentials including USA Boxing Amateur Coach certification, Colorado Muay Thai Coach status, professional boxing and kickboxing licenses, ISSO Personal Training certification, and CPR training. The gym focuses on proper technique development, with classes that maintain a fast pace while ensuring individual attention through small class sizes. Members consistently praise the gym's ability to accommodate everyone from complete beginners to experienced fighters, with personalized coaching that adapts to each person's level while maintaining a structured class flow. The training environment emphasizes solid offensive combinations and strong defensive fundamentals, creating workouts that build both skill and physical conditioning. Reviewers highlight how the gym helps members develop discipline while improving reflexes, agility, and overall fitness through challenging yet accessible sessions. Beyond technical instruction, Black Twenty One fosters a supportive community atmosphere where members feel comfortable regardless of experience. Multiple reviews mention the non judgmental environment and genuine camaraderie among participants, with specific examples of the owner going above and beyond to help members both inside and outside the gym. This combination of professional coaching and community spirit creates an empowering experience where members leave each session feeling accomplished and motivated to continue their training journey.
reviewsWhat Members Say
Members consistently praise coach Alejandro Ayala for his patient, knowledgeable instruction that adapts to individual skill levels while maintaining challenging workouts. Reviewers highlight how he breaks down techniques clearly, provides individual attention in small classes, and creates a welcoming environment for beginners and experienced fighters alike. Multiple members mention significant skill improvement in boxing and kickboxing, with specific appreciation for his supportive presence during fights and his ability to push students to improve daily. The gym's community atmosphere receives frequent mention, with members describing it as supportive, non judgmental, and genuine, where people look out for each other both during and outside of training sessions.
rate_reviewGoogle Reviews (5)
Ryann Dominguez
5 months ago
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
10 months ago
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
Stephanie Rodriguez
a year ago
I’ve trained with Coach Alejandro for a few years, and my boxing and kickboxing skills have improved immensely. He’s cornered me for multiple fights, always bringing a calm and supportive presence. His classes are perfect for all levels—he’s patient, breaks down techniques, and makes sure everyone understands the combos. The gym has a great, welcoming atmosphere with a strong sense of community, making it easy to feel comfortable, even as a beginner. Whether you’re looking to compete or just get in shape, I highly recommend Coach Alejandro and his gym. The environment is motivating, and the personal attention he gives to each student sets him apart from other trainers.
Marion Brown
a month ago
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.
Grant Johnson
4 months ago
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.
Contact
1870 S Acoma St, Denver, CO 80223, USA
scheduleHours
Monday: 5:45 – 8:00 AM, 5:30 – 8:00 PM
Tuesday: 5:00 – 8:00 PM
Wednesday: 5:30 – 9:00 AM, 5:30 – 8:00 PM
Thursday: 5:30 – 7:30 PM
Friday: 5:30 AM – 12:00 PM
Saturday: 7:30 AM – 1:00 PM
Sunday: Closed
groupCoaches & Instructors
Alejandro Ayala
Head Coach
USA Boxing Amateur Coach, Colorado Muay Thai Coach, Professional Coach/Participant Boxing License, Professional Coach/Participant Kickboxing License, ISSO Personal Training Certified, CPR Certified
Born and raised in Denver. Over 15 years experience in MMA, Boxing, Jiu Jitsu, and Kickboxing. Has fought as an amateur and professional. Focuses on community and helping others grow.