Call or Text Us: (636) 696-3566

About Our Studio

  • The Best Fitness Studio For Women in O'Fallon, MO
  • Personal Training and Accountability Near Me In O'Fallon


Fit Girl Fitness is a premier boutique fitness studio built just for women!  We offer small group training classes, partnered with nutrition and accountability. Our all-encompassing approach to fitness will get you the results you deserve, and our amazing community and supportive environment will keep you coming back!


We pride ourselves in having a safe, welcoming and fun community. Our coaches will know you by name, know your goals and how to best serve you. The best part is you’ll be surrounded by the most amazing and inspiring group of women!  Not only do we sweat together but we have fun together!  FGF offers  fun and educational seminars for members.  We also enjoy female only social events outside of the gym! Stay after class to mingle with your new friends and enjoy a cup of coffee at our coffee bar! Remember, we are a tribe of fierce females who like to have fun together too!


Other group training concepts tend to squeeze in 30+ clients per class, which can lead to an overwhelming environment that lacks personalization and support. FGF is the opposite! We believe in treating each member as an individual with their own needs, goals, and limitations. Our group training classes have a maximum number of 12 members in each class!


Our programs are boot camp cardio style classes that include light strength training.  This is a vital component for ANY goal and is what we’ve found most women lack in their fitness routine. We focus on fundamental, functional movements and exercises that any woman at any fitness level can do.

We offer a variety of services to make sure you get the results you are looking for. All you need to do is show up!

The Difference

The owner (Katie) lost over 50 pounds and in that process realized she wanted to help women feel as amazing as she does!  She knows how it feels to be overweight, unhappy and lack confidence.  She knows how it feels to be judged at the big box gyms surrounded by bulky men and beautiful skinny women.  Her dream is to help women get healthy, lose weight and gain confidence!


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