We are the ORIGINAL CrossFit Affiliate in Lake St. Louis

Come give us a try.  The first week is always free. Our programming is effective and fun!

Established in 2013, we have years of experience and expertise to guide you, no matter your goals.

Nourish Nutrition Healthy Habits Challenge

The Challenge begins on June 22. Click here for more information and to register.

TRENCHES IS OPEN! Here are our temporary GUIDELINES:

  • Please reserve your spot in class. We are no longer capping classes, but we are still taking some additional precautions.
  • We ask that you maintain social distancing as much as possible and be aware and respectful of others’ personal space.
  • We ARE allowing drop-ins during this time, as long as you reserve via our online portal (link below).
  • You may bring children, but we will ask you to sign our waiver for them. Even though some of the waiver may not apply since they will not be working out, there are some Pandemic clauses that we need you to sign off on in order to protect our business.
  • The coach will guide you through the class, so please be patient and follow all instructions.
  • You are allowed to use the chalk in the chalk buckets, but you may feel more comfortable bringing your own. We provided everyone with their own chalk when we reopened, so feel free to bring that.
  • We will continue to disinfect all equipment and high touch surfaces between classes.
  • The kiosk remains off limits; the coach will sign you in and record your scores (or feel free to use your mobile device to record your scores).
  • When there are days that we share equipment or rack space, if you feel uncomfortable, please tell the coach. We will accommodate you, no questions asked and no judgement passed.

Trenches Services

  • CrossFit Programming
  • Nutrition Coaching
  • Personal Training
  • CrossFit Teens
  • CrossFit Kids
  • Skill Seminars
  • Weightlifting Seminars
  • Mobility Clinics

Come See Us!

Interested in trying CrossFit? Your first week is always free! Come try it out with no obligation to join to see if CrossFit is for you! Call or text us at 636-344-0012, email us at, or use one of the buttons below to let us know you’re coming. We’d love to hear from you!

1 Week FREE Trial

Try CrossFit Trenches for free for one week with no obligation to join. Free trial expires one week from first class attended.

Drop In

Dropping in from out of town or another box? Click here to register and let us know you’re coming!

Want more info? Contact us!