Are You Looking For A Friendly Place To Workout? Do You Want Encouraging Coaches? A Non Intimidating Environment?

Mountain CrossFit Serving Castle Rock Since 2008 A Division Of Rocky Mountain Self Defense & Fitness  Est. 2006

Your Journey Starts Here!

Lose Weight

Drop Weight With Our 6 Week Meal Plan

Build Muscle

Our Coaches  Will Help You Every Step Of The Way

Not Your Typical Gym

We Make CrossFit Do Able For Everyone.

This gym is a gem! I came with specific goals in mind and John and Jenny both help me to achieve them. The workouts are addicting, I drive over 30 minutes to get there. I look forward to coming here and get withdrawals when I travel. The gym is family friendly. I don’t feel like I’m just a source of income here. ~ Stephanie H. Elizabeth, Co

Learn More Or Book Your Intro Class Here

Give Us 6 Weeks, And We’ll Get You On The Right Path To A Happier & Healthier You!

Regularly $350

Internet Special $250

Includes: 6 Week Meal Plan, Nutrition Guide, Grocery List, CrossFit Tee & Jump Rope

You Will Be Redirected To Our  Zen Planner Member Portal Site

Mt Crossfit Owners

Owners John & Jenny

Will Help You Achieve Your Goals

We are not a big box gym. We are small gym for the whole family. Our goal is to have a gym that any fitness level can walk into and feel at HOME! Not Out Of Place.

Do You want:

  • To Lose Weight? To Look Better Naked?

  • To Have Long Term Success?

  • To Make Friends While Working Out?

  • To Have Coaches Who Care?

You Can CrossFit @ Mountain CrossFit

Let Us Help You Get Started



Two years ago I was looking for a way to get into shape when I stumbled upon Rocky Mountain Self Defense and Fitness. At the time I weighed over 200lbs and was very out of shape. Working with the owner and his staff I have cleaned up my diet, increased my endurance and strength, and lost over 30lbs that I have been able to keep off… ~Josh Castle Rock