Duality Fitness | Denver's Favorite HIIT + Boutique Fitness Studio

classes

We're Denver's first studio to offer heated bootcamp, power vinyasa, and treadmill cardio—all under one roof. Experience three unique formats designed to help you turn up the intensity, wind down, or reset your body and mind.

circuit

HIIT-Based Training

explore circuit

rescon

Heated Bootcamp

explore rescon

flow

Heated Power Vinyasa Yoga

explore flow

Testimonials

the word on duality

"So hot & hard! Music was 🔥. I just moved here and have been exploring lots of studios. Arkady is definitely one of the better/harder instructors I've experienced in Denver so far!"

Anonymous Student Review

"Best Gym I've ever been to. The trainers are super helpful and push you beyond your mental and physical threshold. I love the mix of high-intensity training combined with the stillness and focus of yoga. Extremely clean studio with a fun community. Highly recommend!"

Anonymous Member Review

"Been a member for 2.5 years and it's awesome. One of the best HIIT studios you will find not only in Denver, but anywhere. I've never done the same workout twice -- which I love. The variety, friendliness of the coaches along with their stellar music selection and awesome workout tips make this the place to be. 5/5 stars!"

Ben Waring, Member

"Duality is my absolute FAVORITE workout studio in Denver. I’ve been a member for over 2 years and can easily say I’ve found more than just a good workout here. I keep coming back not only for the killer workouts, but for the community and for the amazing people I’ve met."

Anonymous Member Review

"I can not recommend Duality enough! I love all of the formats that are offered and all of the coaches truly push you in the best way possible. Taking classes at a gym can be intimidating, but I’ve found Duality to be a super welcoming community that provides its students with well-rounded, challenging workouts :) Very very grateful to have found this amazing gym!!"

Emma Gaenzie, Member