Mountainside Fitness

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Mountainside Fitness Mountainside Fitness is the largest locally owned fitness center chain in Arizona boasting 16 fitness centers throughout the Valley.
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As the leading fitness destination in Phoenix, we strive to provide our members value through 80 group classes weekly at every location, engaging childcare you can trust, state-of-the-art equipment, clean facilities, and of course, towel service. Simply put, Mountainside Fitness is your second home. We’re here to support you, from your heath & fitness journey to family fun. Because that’s the Mountainside Way.

10/02/2026

Join Arizona's #1 Gym!

From strength training and group fitness to recovery amenities and childcare, Mountainside Fitness makes it easy to build a fitness routine you'll love.

Join today and we'll upgrade your membership with 2 free months of childcare and peak amenities, including massage chairs. Click the link to get started.

https://na2.hubs.ly/H089djQ0

Muscle at Frank Lloyd Wright! 💪
10/02/2026

Muscle at Frank Lloyd Wright! 💪

You’re only one workout away from a good mood. We’ll see you at Mountainside! 💪
10/01/2026

You’re only one workout away from a good mood. We’ll see you at Mountainside! 💪

Your chance to see the Arizona Cardinals! 🏈 There’s still time to enter our InBody giveaway. Complete 2 InBody scans by ...
09/29/2026

Your chance to see the Arizona Cardinals! 🏈

There’s still time to enter our InBody giveaway. Complete 2 InBody scans by October 11 for your chance to win a 4-pack of Cardinals tickets!

Scan 1: Set your baseline
Scan 2: See your progress

Stop by your club and get started!

09/29/2026

Mountainside Fitness proudly partners with Silver Sneakers to provide a welcoming place for older adults to move, build strength, and enjoy community. From group classes to top-of-the-line equipment, your fitness journey continues here.

Check your eligibility and come experience the difference.
Your best years of fitness can start today.

Not sure of eligibility? We can help! Click the link below to get started.
https://na2.hubs.ly/H084cww0

09/28/2026

Progress over perfection.

Keep showing up, keep putting in the work, and trust the process. Every step forward counts.🔥

Happy

Your membership goes beyond the gym.With MPerks, Mountainside Members get exclusive savings from brands that support you...
09/26/2026

Your membership goes beyond the gym.

With MPerks, Mountainside Members get exclusive savings from brands that support your health, wellness and lifestyle.

Swipe through for a few of our wellness favorites and discover even more through the link below.
https://na2.hubs.ly/H080c940

09/25/2026

Thank you so much to everyone who joined us for Oro Valley’s Grand Preview Party last weekend!

We truly appreciate everyone who came out to celebrate our newest location and our first Mountainside Fitness in the Tucson area. A special thank you to our amazing local vendors who joined us and helped make the day so memorable!

Want to check out the brand-new club and experience it for yourself?

Click the link below to download your 5-day pass today! https://na2.hubs.ly/H081f-P0

Happy   from Mountainside Fitness and the Arizona Cardinals Cheerleaders!We’re proud to be their official fitness partne...
09/25/2026

Happy from Mountainside Fitness and the Arizona Cardinals Cheerleaders!

We’re proud to be their official fitness partner and are cheering them on all season long. Go Cardinals! 👏💪

Get your Personal Training sessions before this limited-time offer ends: • 8 Sessions – $280• 15 Sessions – $495 + 1 FRE...
09/23/2026

Get your Personal Training sessions before this limited-time offer ends:

• 8 Sessions – $280
• 15 Sessions – $495 + 1 FREE Stretch Fit Session ($45 value)

Offer ends September 30!

Click the link below to purchase your sessions and get started!
https://na2.hubs.ly/H07-7xh0

Mom's Day Out!🌷 You crush workouts, juggle schedules, and still find time to show up strong, now it’s your turn to be sp...
05/07/2025

Mom's Day Out!🌷

You crush workouts, juggle schedules, and still find time to show up strong, now it’s your turn to be spoiled!

We’re giving ONE lucky Mom a day off on us!
A FREE night’s stay at The Fairmont Princess 🌟

Here’s how to enter ⬇️
1. Post why you LOVE Mountainside Fitness
2. Tag us so we can see it
3. Share THIS post to your story
4. Like this post ❤️
5. Make sure you are following us!

🗓 Winner announced 5/9, don’t miss out!

"Love the smoothies and gym!! This place rocks!! Oh and staff is AMAZING!!! HIGHLY RECOMMENDED" says Dr Robert on Google
11/11/2021

"Love the smoothies and gym!! This place rocks!! Oh and staff is AMAZING!!! HIGHLY RECOMMENDED" says Dr Robert on Google

★★★★★ Love the smoothies and gym!! This place rocks!! Oh and staff is AMAZING!!! HIGHLY RECOMMENDED

"Very impressed with the staff and facilities" says Lawrence on Google
11/09/2021

"Very impressed with the staff and facilities" says Lawrence on Google

★★★★★ Very impressed with the staff and facilities

"Talin did a great job setting me up with a membership.  Often asked if I had questions or if I needed more detail.  He ...
11/03/2021

"Talin did a great job setting me up with a membership. Often asked if I had questions or if I needed more detail. He showed me around the facility and explained all the benefits of my new membership." says Bob on Google

★★★★★ Talin did a great job setting me up with a membership. Often asked if I had questions or if I needed more detail. He showed me around the facility and explained all the benefits of my new membership.

"Heather was extremely helpful and knowledgeable." says Steven on Google
10/23/2021

"Heather was extremely helpful and knowledgeable." says Steven on Google

★★★★★ Heather was extremely helpful and knowledgeable.

"Kay was extremely professional, friendly and she answered all of my questions on my first call!  I scheduled my appoint...
10/22/2021

"Kay was extremely professional, friendly and she answered all of my questions on my first call! I scheduled my appointment and signed up for the membership at Mountainside. I am very excited to meet everyone at
the Gym! I appreciate good customer service!" says Vicki on Google

★★★★★ Kay was extremely professional, friendly and she answered all of my questions on my first call! I scheduled my appointment and signed up for the membership at Mountainside. I am very excited to meet everyone at the Gym! I appreciate good customer service!

"Staff are always so welcoming, and equipment is always clean." says tiana on Google
10/20/2021

"Staff are always so welcoming, and equipment is always clean." says tiana on Google

★★★★★ Staff are always so welcoming, and equipment is always clean.

"Amazing child care center. Tons to do for my 2 year old and I can trust the girls that work there to take care of him l...
10/08/2021

"Amazing child care center. Tons to do for my 2 year old and I can trust the girls that work there to take care of him like I would!" says Nikki on Google

★★★★★ Amazing child care center. Tons to do for my 2 year old and I can trust the girls that work there to take care of him like I would!

"If you are looking for a clean, upbeat environment to work out in you have found your place! Staff is fantastic and alw...
10/08/2021

"If you are looking for a clean, upbeat environment to work out in you have found your place! Staff is fantastic and always friendly. Childcare is outstanding and my kids always beg to come! If you are looking for a new gym, look no further! Mountainside is the best!" says Hailey on Google

★★★★★ If you are looking for a clean, upbeat environment to work out in you have found your place! Staff is fantastic and always friendly. Childcare is outstanding and my kids always beg to come! If you are looking for a new gym, look no further! Mountainside is the best!

"The staff are kind, helpful and respectful. They're always ready and willing to assist or advise in any way they can. T...
09/29/2021

"The staff are kind, helpful and respectful. They're always ready and willing to assist or advise in any way they can. The environment is well constructed and filled with many different machines and tools to work out the way I want to. After a good work out, the indoor basketball court is a great way to end the day. I'm glad I decided to sign up!" says Juan Jose on Google

★★★★★ The staff are kind, helpful and respectful. They're always ready and willing to assist or advise in any way they can. The environment is well constructed and filled with many different machines and tools to work out the way I want to. After a good work out, the indoor basketball cour...

Address

1253 N Greenfield Road
Mesa, AZ
85205

Opening Hours

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

Telephone

(480) 889-1865

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