Become a better version of you!

Enjoy Colorado

We love health, fitness, adventure, and good beer!

Be Safe. Grow Strong.

Regardless of your age or fitness level!


We Are
(not your average gym)

We are not a ‘health club’. Rather, we promote a healthy life through functional and varied exercise while fostering confidence, camaraderie, and community. Life in Colorado is about challenging yourself both physically and mentally. We are here to help you safely achieve your fitness goals.

We Believe

Everyone deserves the powerful feeling of:
victory // challenge
accomplishment // competition
regardless of age, background or fitness level.


"I recently started CrossFit, and I am so happy that I did. I had been going to the gym for years, but never quite understood if I was doing things correctly, or if I worked out enough. 5280 CrossFit is like having a gym, a motivational coach and a personal trainer all in one. Now that I have experienced the knowledge, the people, and the facility that 5280 CrossFit has to offer, the old gym is now a distant memory."

− Nick W

"If you are looking for a CrossFit gym that gives you the absolute most for your money, this is the one. This is one of the nicest, most well outfitted CrossFit gyms out there. Do yourself a favor and get in with them now to have a CrossFit experience the way it is meant to be."

− Nate B

"I've been on the CrossFit kick for over 3 years, I've dropped in at a lot of boxes around the country when I travel for work - 5280 CrossFit is up there with the best of them. Owner/Coach Jason Grubb is a great coach, he pays close attention to your form all while pushing you to reach your maximum potential."

− Jeff M

"The facility is amazing and Jason is a coach I can trust. He knows what he is doing and he cares about each and every member. He pushes me to be my best, but knows my limitations and designs a workout that helps me discover what I CAN do.....not what I cannot do!"

− Charlene B

CrossFit Classes in Golden

Located just off of HWY 93,
we offer classes throughout the day
and workouts that are scalable
for any range of fitness.

Start your journey today!

Get Started

What is CrossFit?


Constantly Varied

Every workout is different.


Functional Movement

How we move in real life.


High Intensity

Heart rate goes North!


The Sport of Fitness

Become the best version of yourself.

Explore 5280 CrossFit

The Science

“High intensity exercise yields results that differ in kind from moderate-intensity efforts, not just in degree (but in physical results). In a peer-reviewed study in which one group exercised at moderate intensity for 45 minutes on a stationary bike and the other group did high-intensity intervals for 20 minutes and burned the same number of calories, the high-intensity group lost nine times the fat. Human growth hormone (HGH) and other compounds cascade into the blood of people who sprint as though a monster is chasing them and lift heavy objects as if earthquake survivors are trapped underneath. These hormones signal the body to burn fat and build muscle. The grim trudge-to-nowhere on a cardio machine, or miles of brisk walking, does not unlock this chemical cascade.”

-J.C. Herz | Time Magazine

Located in Golden, Colorado

Highway 93 & Hog Back