Mountainside Fitness

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Mountainside Fitness is the largest locally owned fitness center chain in Arizona boasting 17 fitness centers throughout the Valley. We’re here to support you, from your health & fitness journey to family fun. Because that’s the Mountainside Way.

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Mountainside Fitness Contact Information:

  • 9745 W Happy Valley Rd
    Peoria, AZ 85383
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  • Phone: (623) 561-5525
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  • Hours Currently Open

    Monday 4:30 am - 11:00 pm
    Tuesday 4:30 am - 11:00 pm
    Wednesday 4:30 am - 11:00 pm
    Thursday 4:30 am - 11:00 pm
    Friday 4:30 am - 9:00 pm
    Saturday 6:00 am - 9:00 pm
    Sunday 6:00 am - 9:00 pm