Downtown Phoenix's premier fitness destination with top-tier amenities and a welcoming community vibe.
Mountainside Fitness Chase Field offers a state-of-the-art gym experience in the heart of downtown Phoenix, attached to Chase Field. This location is known for its clean, well-maintained facility with modern equipment, spotless locker rooms, and recovery options. The staff, including standout members like Jessica, Carlos, Joe, Gina, Ryan, Isaac, and Lance, provides exceptional service with a positive and motivating atmosphere. Ideal for early-morning workouts or any fitness level, it combines convenience with a private-gym feel, making it a favorite among locals for consistent, professional, and energetic fitness sessions.
401 E Jefferson St, Phoenix, AZ 85004, USA
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Access to modern, well-maintained equipment including cardio machines, free weights, and strength training stations in a clean, organized environment.
Professional guidance from friendly, knowledgeable staff who offer personalized assistance, motivation, and a welcoming atmosphere for all fitness levels.
Enjoy spotless locker rooms, recovery options, and convenient amenities to enhance your workout experience and post-exercise routine.
Join a positive, motivating community with staff who remember members by name, fostering a supportive and non-intimidating gym culture.
Prime location attached to Chase Field with easy parking, stunning views, and a less crowded facility ideal for short or extended workouts.
Overall rating
Marc S
Great little gym! Clean and organized! Jessica is awesome, always smiling and welcoming. The rest of the crew is also top tier and always useful.
Nicholas Taylor
Mountainside Fitness at Chase Field is hands-down one of the best gyms in the Valley, and the early-morning crew deserves special recognition. I’m in the gym at sunrise most days, and the consistency, professionalism, and energy from the staff—especially Jessica and Carlos—sets the tone for a great start to every workout. Jessica is always upbeat, welcoming, and genuinely helpful. She remembers members by name, keeps the floor running smoothly, and creates an environment where people actually want to show up early. Carlos is just as outstanding—professional, friendly, and always making sure the gym is clean, organized, and ready to go for that first wave of morning lifters. Their work ethic and attitude make a huge difference in the overall experience. The facility itself is clean, well-maintained, and has everything you need—great equipment variety, spotless locker rooms, and all the recovery options. But what truly elevates this location is the team that keeps it operating at a high level. The view is amazing and parking is convenient for downtown. If you’re looking for a gym with a positive culture, great amenities, and staff who actually care, the Chase Field Mountainside Fitness is unmatched. Huge thanks to Jessica and Carlos for making every morning feel like the perfect place to get after it. Highly recommend!
Wendy Meza
Absolutely love this gym! Out of every location, this one stays fully stocked, and the staff is always so friendly. Isaac and Lance seriously make the whole place feel way more welcoming. It gives that private–gym vibe in the best way. 10/10 recommend if you want a spot that actually feels good to be in.
David P
Clean gym, in a great area. In the heart of downtown Phoenix attached to Chase Field. The staff here have always been helpful; especially Joe. He has always been courteous, professional, and is eager to help customers. I have multiple gym memberships through my insurance. Mountainside fitness downtown is a favorite. Not the largest facility, but has everything you need for a great workout. It is never overcrowded here!
Etheryn Lotus
"☆☆☆☆☆ This is hands-down the best gym experience I've ever had. The facility is immaculately clean, and the equipment is modern and always working. A huge shoutout to Joe, Gina (manager), and Ryan —they are welcoming, it really makes a difference. The atmosphere is positive and motivating, and helpful not intimidating at all. I highly recommend Chase Field's MSF to anyone, beginner or expert!" This is my favorite gym to get a good short or longer work out in.
