Call Us: 970-439-3112
Call Us: 970-439-3112
Marci Mattox




With a B.A. in kinesiology, Marci has been working in the fitness industry for more than 20 years.  “My passion for exercise began my freshman year in high school when it became a part of my everyday life. I followed that passion into college where I based my education around fitness. I have taught various group exercise classes including Step Aerobics, Spin and Weight Circuits before falling in love with the high intensity workouts of CrossFit and now FIIT.

I love seeing clients realize that they can do things they couldn’t do just weeks before. CrossFit Steamboat has become a family for me. The support for all, no matter the age or ability has been inspiring to be a part of! At CrossFit, we do things that scare us- get us out of our comfort zone, and make us better. We become stronger at the gym and stronger on the mountain, stronger on our bikes and stronger in everyday life. Even on the days that I need to take off, to rest, I miss the gym. The friends, the encouragement, the family. And sometimes I show up on those days- because I don’t want to miss out.

This isn’t your typical gym, where you put your headphones on and do your thing. This is a place where you push yourself beyond the limits you set for yourself and you have friends pushing right alongside you. I’m so excited and honored to be part of it.”


CrossFit L-1 Coach, ACE Certified Personal Trainer