About FLEX

At FLEX, a top-rated Sports & Fitness in Oakland, CA, you’ll find a great place to train, compete, and enjoy the game. Backed by a 4.90-star score from 108 reviews, we stand out for great service and quality and a convenient, player-friendly experience.

Last updated: May 17, 2026

Business Hours

Closed · Sunday 8 AM-6 PM
Sunday 8 AM-6 PM
Monday 6 AM-9 PM
Tuesday 6 AM-9 PM
Wednesday 6 AM-9 PM
Thursday 6 AM-9 PM
Friday 6 AM-7 PM
Saturday 8 AM-6 PM

Customer Reviews

4.90
Based on 108 reviews
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Jeannette Brantley

Flex is a great place for all the reasons I have not liked gyms. It is smaller than most , which i really love..never crowded at the times I opt to go, it is clean, staff is very nice also. Flex is also affordable for those of us who are now retired and live on fixed incomes but want to …

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Heather Tsang

Flex is a great, no frills, neighborhood gym. The space is much roomier than it looks from the outside with a studio, spin room, and weight room in the back. The weight room has two squat racks so there is rarely a line. It is clean, the people are nice, and it's usually not crowded. What more could you ask …

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Theodore Rocco Pelletier

This is a great neighborhood gym. The staff is always friendly and helpful; the equipment is well maintained. Whether you want to do circuit training, free weights or take one of many classes, this is the place to come. Just a real great environment to work out in.

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Christopher Groth

After not attending a gym in over a year and a half, I was very nervous about coming back - partially due to health and safety but mostly because gyms can be intimidating places! Not so at FLEX, the atmosphere is warm and welcoming and staff/patrons are very helpful & friendly. It feels good to be back!

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Brendan

Great gym, highly recommended. Staff is friendly, accommodating and responsive. Equipment is always in working order. Facility and equipment is always clean. Numerous exercise and yoga classes for people of all ages, interests and abilities. I’m giving 5 stars but have one complaint/warning for those looking for a circuit gym. Circuit etiquette is not enforced here. You will encounter people …

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Soy Watt

I tried Flex on a free 3 day pass. I want to join Flex Gym again because it is located so close to where I live. Note:: The problem with the Stair Master machines in general is that the rise is too high and that makes me not want to exercise on it very long, even on a slower setting …

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Evan Calip

While a small gym, it never feels crowded enough to where you can't do your workout. It's a clean and organized space. There's enough room, weights, and machines to accomodate your level and type of work out for the day. The gym does a great job of fostering a collaborative environment as other members seem to care about etiquette like …

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F F

100!! Well-equipped, clean, convenient boutique gym that's not overcrowded, with good customer service, great instructors and friendly community vibe too. One of the few gyms with Open gym option, as well as classes that's very reasonably priced. Having been to over 10 gyms in 3 different countries, and joined an Equinox-equivalent for 4 years, I can honestly say this is …

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Lianik Borlasca

This gym is an excellent place. It is clean, nice environment, good taste in workout music, excellent instructors, the classes are fun and versatile, great workout machines and friendly staff. I really enjoyed my time there!. If I still lived near by the piedmont ave. I could go to flex again without any doubts. Believe me, I'm a gym bug …

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Serena Clayton

Great value for a basic membership. It’s clean, has good equipment and good hours. We haven’t taken the classes but I hear they are good.

People Also Ask

Where is FLEX located?
FLEX is located at 3925 Piedmont Ave, Oakland, CA 94611, United States, Oakland, CA, United States. You can get directions here.
What is FLEX rated?
FLEX has a rating of 4.90 out of 5 stars based on 108 customer reviews.
What are FLEX's hours?
FLEX's hours vary by day. Please check the Business Hours section above for the full weekly schedule.
How do I contact FLEX?
You can reach FLEX by phone at +1 510-653-3539.
What type of business is FLEX?
FLEX is a sports & fitness business located in Oakland, CA. <!-- VOILA_REWRITTEN --> At FLEX, a top-rated Sports & Fitness in Oakland, CA, you’ll find a great place to train, compete, and enjoy the game. Backed by a 4.90-star score …