The center is an official CrossFit® affiliate. Last checked: 26/09/2025

CrossFit is a registered trademark owned by CrossFit, LLC, which is not affiliated with FitFit United States.

Information about CrossFit® MOB

E 120th Ave 3750
80233, Thornton
+1 720-797-7734

Opening hours

  • Monday: 5:00 AM – 8:00 PM
  • Tuesday: 5:00 AM – 8:00 PM
  • Wednesday: 5:00 AM – 8:00 PM
  • Thursday: 5:00 AM – 8:00 PM
  • Friday: 5:00 AM – 8:00 PM
  • Saturday: 7:00 – 10:30 AM
  • Sunday: 10:00 AM – 12:00 PM

Services, Machines and Guided Classes

CrossFit®

CrossFit® MOB: Opinions

5/5 (5 Opinions)
Brandi Hopkins 3 years ago

Fantastic experience: MOB was the most welcoming box! This was not my first time here, not will it bet last. In town visiting family and it was an easy decision this is where I would be working out. All of the coaches ensure proper mechanics of lifts for every individual and teach efficiency. They listen to special needs and help you figure out good alternatives. The atmosphere is always positive, and everyone you meet there has a sincere desire to know you. Enjoyed my visit very much!

Fred Moesler 3 years ago

Fantastic experience: I dropped into Crossfit MOB while traveling, and was well taken care of. All of the coaches were helpful (and put me thru the paces!), and the people are friendly to newcomers. I highly recommend Crossfit MOB if you're visiting or live in the area!! Thanks again all at the MOB!

Cortney Cmelo 3 years ago

Fantastic experience: Crossfit MOB is a great place to get fit. The coaches are great and really work with you to make sure you are lifting correctly and that you comfortable with the movements. All levels of experience come and enjoy the atmosphere. Everyone makes everyone feel welcome and is there to help with your goals.

melanie atencio 3 years ago

Fantastic experience: This gym is amazing! I have never done CrossFit before but then I joined CrossFit MOB and it completely changed my life. Great atmosphere, clean facility, awesome community, and amazing coaches. I have accomplished so much since becoming a member here. I have done fitness workouts I never thought my body was capable of. I love the nutrition coaching and personal training. All the coaches take the time to help everyone and will go out of their way to make sure you’re pushing yourself and getting results!

Acacia Dettman 3 years ago

Fantastic experience: This gym has changed my life. I was hesitant to get into CrossFit, and the first few gyms I visited in the northern Denver area didn’t do anything to alleviate that hesitation. The first time setting foot in MOB, however, was a completely different experience. Gabs, the owner, instantly came up to me, introduced himself, and spent the next 10-15 minutes answering all of my questions relating to the gym and CrossFit in general. I did my first class, and the rest is history. I come here almost every day of the week now. Not just because I am attempting to become a competitive athlete, but also from the sense of community I get from all of the coaches and other attendees. I love showing up and seeing all of my friends in an environment that I love. If you’re considering joining a CrossFit gym, I promise you won’t regret choosing MOB.

Leave your opinion about CrossFit® MOB:

1 = Poor 5 = Excellent

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