Coefficient CrossFit

Coefficient CrossFit Coefficient CrossFit is a close-knit community with expert coaching and top-tier facilities.

We are so proud of members Kristie Lee Mankowich Tawny Willis and Jacob Willis for their exceptional performances at Hea...
09/01/2026

We are so proud of members Kristie Lee Mankowich Tawny Willis and Jacob Willis for their exceptional performances at Heart Of America Competition this past weekend. They showed up and did hard things, and it seems like they learned a little along the way. Kristie Lee Mankowich literally met her teammates there, and Tawny and Jacob joined forces with friends from another gym. Fitness is fun, and brings people together yall! Way to go friends!!

Looking for a way to get your workouts in while your kids are with you?We’re looking for a few awesome people to join th...
08/29/2026

Looking for a way to get your workouts in while your kids are with you?

We’re looking for a few awesome people to join the Coefficient CrossFit Childcare Team!

In exchange for 7 childcare shifts per month, you’ll receive an unlimited Coefficient membership ($150/month value) PLUS free Fundamentals classes to get you started.

And if you’re a mom, you’ll also have access to our Motherhood Strong classes, designed specifically to support women through pregnancy, postpartum, and motherhood.

You’ll get to train, be part of an incredible community, and help create the kind of gym environment where parents don’t have to choose between taking care of themselves and taking care of their kids.

We’re specifically looking for availability for our 9:15 AM or 4:30 PM shifts.

Interested? Text Joselyn at 618-979-7309 to apply.

Come be part of what makes Coefficient more than just a gym.

08/23/2026

Last week of August and we’ve got some great training in store for everyone!

Mental Test Monday starts us off with some sleep pulls, farmer’s carries and gymnastics, then we have our 1 Rep MAX OHS (🤗🙌🏼), then some skills work and a MetCon working on Bar Muscle Ups, and we ‘re gonna finish the week with some running and the Community Cup #4!!

It’s gonna be a great week and we can’t wait to share it with all of you!

Coefficient CrossFit. Find your constant.

findyourconstant

Join us today at the Supplement Superstores Customer Appreciation BBQ!Check out our booth for your chance to win $200 CA...
08/22/2026

Join us today at the Supplement Superstores Customer Appreciation BBQ!

Check out our booth for your chance to win $200 CASH and a free 1-month unlimited membership at Coefficient CrossFit. All it takes is 60 seconds 😈

60 Seconds:
10 Burpees + Max-Rep Thrusters

Rx: One Male (95 #) and One Female (65 #) Winner ($200 each + membership)
Scaled: One Male (75 #) and One Female (55 #) Winner ($100 each + membership)

Plus talk to our coaches about the most effective way to increase your fitness across broad time and modal domains. Our expert coaches deliver the BEST fitness experience, period.

The S2 customer appreciation BBQ is 100% FREE to attend and will feature 60+ local vendors and supplement brands, free samples, fitness competitions and prizes, a live DJ, food trucks and more.

10am - 1pm, Saturday, 8/22
181 Mid Rivers Mall Dr., St. Peters, MO

Coefficient CrossFit. Find your constant.

08/09/2026

OH BABY!!
It’s gonna be HOT this week 🥵 so we are making sure to bring the heat with our training!

Intervals! ⏱️
Strength! 💪🏼
Gymnastics! 🤸‍♀️
Running! 🏃‍♀️🏃‍♂️
We’ve got it all and then some this week in the gym and we can’t wait to see you all there! 🙌🏼

Coefficient CrossFit. Find your constant.

08/02/2026

First week of August and MAN, do we have a great week of training planned!!

Conditioning.
Strength.
BB cycling.
New Strength Mechanics.

It’s gonna be a whole thing and you should really be there! It’s gonna be a great week and we can’t wait to see you there!

Coefficient CrossFit. Find your constant.

07/28/2026

Teamwork makes the dream work! If you're looking for insruction on partner rowing techniques that are a little bit more...intimate?...we've got you covered.

Coefficient CrossFit. Find your constant.

07/27/2026

The heat is on—it’s gonna be a HOT one this week and we’re gonna be outside running
🥵🏃‍♀️🏃‍♂️, so please plan accordingly!

We’ve got strength, gymnastics, running and so much more!

It’s gonna be a great (HOT) week in the gym and we can’t wait to see you there!

Coefficient CrossFit. Find your constant.

07/19/2026

We’ve got something for everyone this week, as long as everyone wants burpees! 😂🙄🤦🏻‍♂️

It’s gonna be a great week of training…yes, with burpees, but you’ll get through it because it’s important to “Do Hard Things”!! We’ll see you in the gym! 💪🏼😍🤙🏼🔥

Coefficient CrossFit. Find your constant.

Address

1735 S River Road, Suite 180
St. Charles, MO
63303

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