Fit Girl FitnessFit Girl Fitness

Boutique Fitness Studio in O'Fallon

Our Mission is to Help You Succeed


Fit Girl Fitness


Feminine Fitness! Every aspect of our boutique fitness studio is designed for women! Our studio is fresh and clean.

Our workouts and music are customized and designed for women!

We take the intimidation out of the gym! Our atmosphere is female-friendly and there’s absolutely no judgment! We are a gym for every woman!

Whether you’ve never stepped foot in a gym before or are a gym addict, you will feel comfortable joining our tribe! Our goal is to encourage, support, and uplift every woman no matter their age, body type, or fitness level!

We are here to help you become the most FIERCE, FIT & FABULOUS version of yourself! We look forward to having you join our Fit Girl tribe!


A Team of Coaches that get results, consistently

Fit Girl Fitness

Our community is what makes us special. And it's what will keep you going

We understand how intimidating it can be to get started on a new fitness journey. Don't worry, our aim is to make your journey as simple as possible.

Katie started Fit Girl Fitness because her story was the same story many of her clients face. She too had to overcome all the obstacles that keep people from living a healthy life.

We don’t believe in quick fixes or gimmicks. We care about your long-term success above all else.

Everything you need to crush your fitness goals

Weekend Classes

Members Only App

Women Only Classes

Easy Scheduling

Nutrition Programming

Personal Training

Conveniently located just minutes from Hwy 70

Working out at the gym isn't easy. But getting there shouldn't be hard. Fit Girl Fitness is located and easily accessible from all of O'Fallon.

310 E Elm St, O'Fallon, MO 63366
Get Directions

The hardest step is always the first step. It's time to act!

Book a Free Consult
Final Offer
pushpress gym management software for boutique gyms and fitness studios