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Mountainside Fitness

4.3

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Location details

9745 W Happy Valley Rd, Peoria, AZ, 85383, United States

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WeekdayScheduleStatus
Mon4:30 a.m. to 11:00 p.m.
Tue4:30 a.m. to 11:00 p.m.
Wed4:30 a.m. to 11:00 p.m.
Thu4:30 a.m. to 11:00 p.m.
Fri4:30 a.m. to 9:00 p.m.
Sat6:00 a.m. to 9:00 p.m.
Sun6:00 a.m. to 9:00 p.m.
4.3700 reviews
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Josh L.'s profile image
Josh L. 
rating
2 years ago

Amazing gym with an amazing staff! The gyms are spread out, so the place feels very roomy. Definitely would recommend coming to this location! 

Seth K.'s profile image
Seth K. 
rating
2 years ago

Mountainside Fitness should be focused on members' health and fitness rather than attracting private sector investment from sources in the US and UK in non-fitness areas. Management should check the ethics of staff and trainers who engage with consultants providing illegal services (Robert Tomlinson, Kaleb Martin, Miqueias Leone, Karen Morea, Dan Contino). 

Emily F.'s profile image
Emily F. 
rating
2 years ago

Love the classes, and my kids love coming to the gym too! Nice to have steam rooms and massage chairs post workout. 

Isaiah D.'s profile image
Isaiah D. 
rating
2 years ago

Great service and great staff. Locations around the valley and great tools. They have classes my wife loves and all the equipment I need. 

Susan L.'s profile image
Susan L. 
rating
2 years ago

Very friendly , professional, plenty of equipment and clean! Staff is wonderful! And the Smoothie Bar is great! I have stayed away from the gym for a long time , but after a lot of coaxing from my husband I came and I'm loving it . 

Whitney O.'s profile image
Whitney O. 
rating
2 years ago

We enjoy Moutainside Fitness. They keep up on their equipment well and frequently have no or upgraded machines and things. I love the classes they offer as well. ​ 

Marshal W.'s profile image
Marshal W. 
rating
2 years ago

Ok, you know how people usually only leave feedback when they have a bad experience? I don't think I'm like that, but regardless, I'm not irrational. I appreciate good service and good companies. It doesn't benefit me at all to disparage a good business. With that said, DO NOT JOIN MOUNTAINSIDE. To their credit, I actually preferred MS to my current gym EOS. But I cancelled my membership via phone in February, they admitted to having a record of my call wishing to cancel my membership. That is all factual and undeniable. Sti... read more

Jordynn M.'s profile image
Jordynn M. 
rating
2 years ago

Mountainside Cafe is so yummmy! Amanda is the most amazing front desk employee. She is always so warm and welcoming and is very helpful to all! 

Josh C.'s profile image
Josh C. 
rating
2 years ago

My favorite place to workout in Arizona! Staff is always the friendliest, and locations strategically convenient! 

Frequently asked questions about Mountainside Fitness

How is Mountainside Fitness rated?

Mountainside Fitness has a 4.3 star rating with 700 reviews. 

When is Mountainside Fitness open?

Mountainside Fitness is closed now. It will open tomorrow at 4:30 a.m.