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I.S. Fit:

15362 Harlan Road
Lathrop, CA 95330
(209) 373-2441

Club Hours

MON - THU 4 AM - 11 PM
SAT & SUN 8 AM - 4 PM


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I.S. Fit: Lathrop

Conveniently located off of I-5 on Harlan Road, the recently upgraded I.S. Fit: Lathrop offers first-class fitness amenities including top-of-the-line weight training and cardio equipment, stretching and abdominal training areas, certified personal trainers, Fitness on Request, and beautiful new locker rooms. Our cardio theater is also a member-favorite. Also check out our all-new Functional Training area with kettle bells, TRX® and much more!

Ever wanted to get a solid, full-body workout in less than 30 minutes? You can with our 29-Minute Circuit that combines resistance training with high-intensity aerobic.

Come by and see us today for the best value in town!

This club offers Fitness on Request™ a self-service kiosk featuring on-demand classes ranging from beginner to advanced levels, including yoga, cardio kickboxing, ZUMBA® and much more. Classes range from 20, 35, and 50 minutes.

Click HERE to learn more.

Club Amenities

29-Minute Circuit®

An excellent way to tone muscle while simultaneously getting a cardio workout.

Cardio Theater

Catch your favorite shows in our state-of-the-art Cardio Theater while using our top-notch equipment!

Fitness on Request™

Looking for a gym that offers fitness classes that fit around your schedule?

Free Weights

For those who are looking to increase both strength and muscle, lifting weights is key.

Free WiFi

If you’re looking to stream Netflix, radio or Pandora while burning calories, we’ve got you covered with free WiFi.

Functional Training

Functional training exercises use equipment such as kettle bells, medicine balls, resistance bands and free weights to mimic natural movements, everyday activities or specific skills.

Locker Rooms

Private locker rooms with convenient showers, changing areas and lockers (available for monthly rental or day use). A great place to relax and get ready for a workout or prepare for the next part of your day.

Selectorized Equipment

Do you want to build and tone your entire body?


Developed by Navy SEALs, TRX® is suspension training that uses gravity and your bodyweight to its advantage by challenging every muscle.