Mountainside Fitness

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Mountainside Fitness What's Your Goal? 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!

"The great environment and knowledgeable training staff at MSF made me a gym person for the first time in my life. The t...
11/12/2021

"The great environment and knowledgeable training staff at MSF made me a gym person for the first time in my life. The training manager Katy Rees is friendly, professional, and a great addition to the staff. She coordinates well with the trainers and ensures all members are satisfied with their sessions. She's always around to answer any member questions and handle any concerns. I appreciate everything her and the.." says Sanjana on Google

★★★★★ The great environment and knowledgeable training staff at MSF made me a gym person for the first time in my life. The training manager Katy Rees is friendly, professional, and a great addition to the staff. She coordinates well with the trainers and ensures all members are satisfied ...

"I love this gym. The daycare is great! The gym is clean! The classes are fun and motivating! I am a member of the stret...
11/12/2021

"I love this gym. The daycare is great! The gym is clean! The classes are fun and motivating! I am a member of the stretch fit program and absolutely love it! It's nice after a week of working out! I would highly recommend giving it a try, your body will thank you 😊" says aimee on Google

★★★★★ I love this gym. The daycare is great! The gym is clean! The classes are fun and motivating! I am a member of the stretch fit program and absolutely love it! It's nice after a week of working out! I would highly recommend giving it a try, your body will thank you 😊

"Member since 2015. I thought that I wanted to find another gym that was open 24 hours. Joined EOS…. For one visit. Chao...
10/18/2021

"Member since 2015. I thought that I wanted to find another gym that was open 24 hours. Joined EOS…. For one visit. Chaos…is how describe that place. MSF…I have never had a complaint at ANY of your locations. Always clean, great employees, plenty of equipment & clientele with class (mostly). You are my home, MSF." says Rich on Google

★★★★★ Member since 2015. I thought that I wanted to find another gym that was open 24 hours. Joined EOS…. For one visit. Chaos…is how describe that place. MSF…I have never had a complaint at ANY of your locations. Always clean, great employees, plenty of equipment & clientele with cl...

"Tons of equipment, great shakes, great staff." says MrZombieBrainz on Google
04/10/2021

"Tons of equipment, great shakes, great staff." says MrZombieBrainz on Google

★★★★★ Tons of equipment, great shakes, great staff.

"We had a great experience. The information was provided in a very professional manner. Cooper was great very attentive ...
02/28/2021

"We had a great experience. The information was provided in a very professional manner. Cooper was great very attentive and great overall." says Eloy on Google

★★★★★ We had a great experience. The information was provided in a very professional manner. Cooper was great very attentive and great overall.

NEW EQUIPMENT! We received new platforms last week! Try them out the next time you visit.
02/22/2021

NEW EQUIPMENT! We received new platforms last week! Try them out the next time you visit.

"Aaron was quick and efficient in getting me signed up and answered any questions I had. Great atmosphere." says Rustin ...
02/19/2021

"Aaron was quick and efficient in getting me signed up and answered any questions I had. Great atmosphere." says Rustin on Google

★★★★★ Aaron was quick and efficient in getting me signed up and answered any questions I had. Great atmosphere.

"Looking forward to the very well kept Sauna and Steam Room." says Tami on Google
02/15/2021

"Looking forward to the very well kept Sauna and Steam Room." says Tami on Google

★★★★★ Looking forward to the very well kept Sauna and Steam Room.

Address

3345 S Val Vista Drive Ste 110
Gilbert, AZ
85297

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

+14808219501

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