The Gym Inc.

207 E Kemp Ave. Watertown, SD 57201
Largest 24 Hr Gym In Watertown SD


Take A Tour of The Gym Inc.

With so many extras at The Gym Inc. such as  Redlight Therapy, Hydromassage, Tanning, InBody Composition Analyzer and Far Infrared Saunas, you will want to belong to the largest fitness gym in Watertown, SD.  We are your local gym.

About Us

Largest 24/7 Gym in Watertown

Watertown Wellness Center 24 hour fitness bodybuilding, personal training, sauna, redlight therapy

 We are a 24 Hour 7 days a week Gym in Watertown, SD.  All fitness levels are welcome at The Gym Inc.  Stop by for a tour during staffed hours, and we are sure you will be surprised at the size of our facility; we are on 17,000 square feet of floor space on 3 levels.   You will never feel crowded or have to wait for machines.

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So Many Amenities

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We are more than just a gym; you can have a spa experience.  Enjoy FREE 24/7 access to Tanning and  Far Infrared Saunas. 

Want More ?  You can add on 24 Hour access to Hydro Massage for your sore muscles and Red Light Therapy to help your skin and joints to create more collagen for a healthier looking skin and easing of joint pain.   

Or try the InBody 570 Body Composition Analyzer to see how much fat vs muscle you are made of. 

With all our benefits why would you go to any other gym in watertown.


Amenities Details

Group Training

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At The Gym Inc. in Watertown, SD, the Mind Muscle Motion Group Training with Kettlebell Kim will give you the edge you need to start on your fitness path or to take your fitness to a whole new level.  Using Kettlebells and Suspenstion equipment; you will learn new ways to use equipment to get fit efficiently.   Learn more about Instructor here.

Book your Group Training for the session that works for you.  

Book Online

More About Us

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Membership Specials Save NOW!

We have Special Deals on 24 hour fitness Memberships on right now!  So act now to Save Money!

We have Senior, Student, Military and Corporate Discounts for large local employers.  We can even set up a special small company deal if you and your fellow employees want to get a group together and join.  Find out more below. 

Specials & Discounts
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Memberships Options

We have many options available, such as no commitment with month to month.   To save some money pick from our longer time plans.

We have Singles, Couples, Families and of course Add on the 24 hour fitness amenities if you choose.

Learn About Membership Options
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Smoothie Plus & Nutrition Store

The Gym Inc. Members get a DISCOUNT! But even if you are not a member we are open to the public and our prices are marked below manufacturers suggested retail price. Our prices are lower than other gyms in Watertown SD.

More than Smoothies, we have vitamins, proteins and supplements for your health needs.

Come in to get your Pre and Post Workout Drinks & Meal Replacement Nutritional Smoothies.


Not only are Smoothie Plus Smoothies good for you, they taste great too.  

You don’t have to be a Member to visit Smoothie Plus, we are open to the public during staffed hours. 

Find out more

We accept Most Insurance Plans Fitness Benefits