One Way Boxing Club in Chicago, Illinois

“By far one of my favorite gyms in the city. As a strength and endurance athlete, I struggled to build a training plan on my ownu2014but Billy and the other coaches have gone above and beyond to prepare me for every race. This place quickly became my second family. Itu2019s 100% beginner-friendly, and Iu2019d recommend it to both new and experienced gym-goers. Group classes are tailored to those attending class that day! The coac”

— Emily R. · ★★★★★ · 2025-9-24

“As a yoga/ dancer/ nonprofit leader, I came into boxing with little knowledge on how to best train for my charity match. Each of the coaches provide detailed feedback and personalized support to make you feel motivated to know how to progress. I appreciated all the different timings of the classes as this was a huge spot I sought refuge in challenging times in life. I would look forward when the gym was open during h”

— Sushmitha R. · ★★★★★ · 2025-9-29

“I am a professional boxer training on the competition team at Undefined One Way Boxing Club. From the standpoint of a competing athlete, I am absolutely blown away with the professional and all encompassing program and team here. It rivals the best gyms and teams across the nation and internationally that I have seen and always hoped to have in my home city of Chicago. However, this gym is perfect for every fitness l”

— Catharine A. · ★★★★★

“The trainers at One Way & Undefined are truly exceptional! They have a variety of strength/conditioning classes & boxing classes that gives your schedule a great balance of cardio & strength training.”

— Erica O. · ★★★★★ · 2025-9-25

“One Way / Undefined is the best boxing and strength gym that Iu2019ve ever been to! All the coaches genuinely care about each member and really push you in each class. Coach David and Coach Billy do such a great job of adding variation to classes so they donu2019t feel repetitive. The space itself is beautiful and spacious. The equipment is top notch. Lastly, the community theyu2019ve built here is absolutely incredible. Everyon”

— Arjav P. · ★★★★★

“Iu2019ve been training with one of the trainers here long before this new venue launched, and I couldnu2019t be more impressed. The new gym is absolutely top-of-the-lineu2014amazing energy, great classes, and a truly state-of-the-art facility. What really sets this place apart is the knowledge of the trainers. Whether itu2019s boxing, weight training, or weight loss goals ,the whole team is phenomenal. An incredible place to train a”

— Charles F. · ★★★★★

“One Way/Undefined is 100% the gym that you need to sign up for if you are looking to truly thrive. This gym has the highest quality in equipment, programming, coaching and overall vibes. However the best part of this gym is hands down the staff/community. Both coaches and staff genuinely care about you and are always super warm and welcoming. I will say as an openly queer/trans individual, itu2019s immensely intimidating”

— Josie P. · ★★★★★

“I trained with Billy at One Way Boxing, and honestly, it was one of the best training experiences Iu2019ve ever had. Heu2019s super motivating, patient, and really knows how to push you in the right way. The workouts were challenging, intense, and extremely rewarding. I left feeling stronger, more confident, and energized (and yes, very sore the next day, but in the best way possible!). What I love most is that Billy makes t”

— Leslie G. · ★★★★★