Flex Gym LLC

02/01/2026

12/25/2025

Members have access 24/7/365. Day, week and month passes also available.

Happy holidays!

11/25/2024

Picked up a few new (to us) pieces recently! 💪

Legend belt squat (old-school westside barbell equivalent), by far the most requested piece by members.

Hammer Strength behind neck press, unique piece with great handle path.

Hammer Strength iso lateral wide chest press, the best squeeze ever.

Enjoy! 💪

02/10/2024

Snagged another combo rack. Now up to three 💪

09/12/2023

Thanks for including us in your list of best gyms in SD, Best Things South Dakota!

Stop searching for the best gyms and fitness clubs South Dakota has to offer; the work has been done for you! This all-inclusive list of 10 elite exer

01/28/2023

Thanks for the visit, KELOLAND News!

SIOUX FALLS, S.D. (KELO)– More people are hitting the gyms in January to keep up with those new year’s resolutions or to just start their fitness journeys. Lifting has become a passion …

12/27/2022

A couple of days late, but Merry Christmas from Flex Gym!

Thanks to for adding the festive decor and to all who added some plate weight!

10/29/2022

We’re looking for a personal trainer to join our team!

- Flexible schedule
- Set your own pricing
- Client leads provided
- Free gym membership
- Independent Contractor agreement

Interested? Contact us for more info.

10/23/2022

It’s been over a year already since we moved into our new home for Flex after renovating it top to bottom, and we are so glad we did. Here’s a look at what it used to look like. The space has come a long way!

07/04/2022

Happy Birthday 🇺🇸

03/18/2022

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