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UPDATE: Mask Requirements Are Back

We’re calling on you, our member community, to help us stay safe, open and compliant with the new L.A. County mask mandates that go into effect on Sunday, July 18. Together we can beat this thing – please do your part by wearing a mask indoors, even if you are fully vaccinated. 

Download the free 24GO app so you can check-in touch-free, reserve a studio class, join our virtual classes and more. 


Have questions? Call or come by the club, or see our FAQ here.


Altadena Sport Gym

Your workout should always be the high point of your day. Our Altadena gym is designed to excite and motivate, with amazing studio classes, innovative training programs, and ample workout space to help you get into your zone and get moving. Feel the energy. Find your gym community. And reach for your best each day.

At 24 Hour Fitness, we see our clubs as your ultimate daily retreat, where motivation and camaraderie are simply part of your gym membership.

Cardio Equipment
Coin Collect Lockers
Free Weights
Free WiFi
Group Cycling
Group Exercise
Indoor Lap Pool
Indoor and Outdoor Workouts
Personal Training *
Personal Training Area
Pro Shop *
Regulation Sized Basketball Ct
Sauna
Steam Room
TRX Suspension Training
Whirlpool
*Additional fees apply
Check-in Touch-Free
Check-In
TOUCH-FREE
With Our 24GO® App

Club Hours

Sunday 5:00 AM - 9:00 PM
Monday 5:00 AM - 9:00 PM
Tuesday 5:00 AM - 9:00 PM
Wednesday 5:00 AM - 9:00 PM
Thursday 5:00 AM - 9:00 PM
Friday 5:00 AM - 9:00 PM
Saturday 5:00 AM - 9:00 PM

Featured for you, Altadena

GX24 Studio Classes

Studio Classes Included

Top fitness classes led by rockstar instructors. Dance, cycle, yoga, HIIT – with no judgy attitudes and no extra cost.

Peronal Training

Virtual & Personal Training

Meet up with our fitness coaches at the gym or from home for extra accountability and guidance on your road to results.

24GO App

24GO® Fitness App

Live healthy all day, every day. Our 24GO® fitness app suggests workouts for you from hundreds of gym and home routines.

Supportive Communities

Supportive Communities

We’re passionate about fitness and inclusive of everyone. Come in and get the best part of your day – you fit here.

Healthy Together