UBX is coming to Old Greenwich!
UBX delivers a unique mix of boxing and strength training across a 12 round circuit: 6 rounds of boxing bagwork or padwork with a coach, and 6 rounds involving a combination of functional strength, cardio and conditioning movements. Each day is different and expertly programmed by a team of experts.
We offer the ultimate flexibility so you can get the most out of your membership. Our flexible start times mean you don’t have to book ahead, plus you can mix up your workouts to include 1-on-1 support during Coached Hours, independent training during Extended Access or workout anytime, anywhere with our On Demand app.
Register your interest on our website to get access to our foundation memberships.
I’ve been attending classes with Erik for a few weeks now and I have a feeling I will be for a long time lol. I was nervous about attending a class but everyone was very kind and welcoming, had a blast!
LP
Leivis Pérez
Oct 28, 2025
5.0
Love this place! The workouts are quick, intense, and always different. The coaches keep the energy high and really care about your progress.
GG
GBF
Oct 24, 2025
5.0
UBX Old Greenwich is great! Fast moving and fun! Erik is a fantastic coach and stays on you so you get the best workout! All the coaches are great though. Can’t go wrong. And I love that I can show up whenever I want without having to worry if I signed up or not! No wait lists or last-minute cancel fees to worry about. It’s a great concept!! Love it!
KB
Krista Brennan
Sep 2, 2025
5.0
This is the best gym ! I get an amazing workout and all the trainers are super supportive
ET
Erin Teske
Aug 29, 2025
5.0
UBX quickly became my favorite workout. Eric and the rest of the team at UBX are so great. I love not worrying about class start times and just showing up whenever I am able, while still knowing I will have the motivation and knowledge of a trainer there.
Frequently Asked Questions About UBX Old Greenwich
What type of workouts does UBX Old Greenwich offer?
UBX Old Greenwich offers a unique 12 round circuit combining boxing and strength training, including bagwork, padwork with a coach, and functional strength, cardio, and conditioning movements.
What are the opening hours of UBX Old Greenwich?
UBX Old Greenwich is open Monday to Thursday from 5:30 AM to 10:30 AM and 4:00 PM to 7:30 PM, Friday 5:30 AM to 10:30 AM, Saturday 7:00 AM to 10:00 AM, and Sunday 8:00 AM to 10:00 AM.
Where is UBX Old Greenwich located?
UBX Old Greenwich is located at 178 Sound Beach Avenue, Greenwich, CT 06870, USA.
How can I contact UBX Old Greenwich?
You can contact UBX Old Greenwich by phone at +1 475-303-5578 or by email at oldgreenwich@ubxtraining.com.
What payment options are accepted at UBX Old Greenwich?
UBX Old Greenwich accepts American Express, Android Pay, Apple Pay, Bitcoin, Mastercard, and Visa.
Do I need to book my workout sessions in advance at UBX Old Greenwich?
No, UBX Old Greenwich offers flexible start times so you don't have to book ahead; you can attend sessions during coached hours, extended access, or use the on-demand app anytime.
Is there an app available for UBX workouts?
Yes, UBX has an On Demand app available on both Android and iOS platforms for workouts anytime, anywhere.
Which nearby places can I visit after my workout at UBX Old Greenwich?
You can visit nearby places like Sound Beach Pizza, Grill & Delicatessen for a meal, Joe Studio Cafe or Dunkin' for coffee, and Old Greenwich Dental Center for dental care.
Is there a yoga studio near UBX Old Greenwich where I can relax?
Yes, OG Yoga, a yoga studio and gym, is nearby and can be a great place to relax or complement your fitness routine.
What shopping options are available around UBX Old Greenwich?
Nearby shopping options include Station Centre for groceries, Gather boutique for clothing and jewelry, and Old Greenwich Wine Merchants for drinks.