Darin Carr is the owner and Master Instructor of The Rock Martial Arts and Fitness. With over 30 years of martial arts training and teaching, Master Carr has definitely found his calling in life. As a Certified Personal Trainer, Youth Fitness Specialist, Youth Nutrition Specialist and Certified Speed and Agility Coach, Master Carr’s continued education never stands still. His goals are to empower lives through connecting with them using martial arts and fitness, and he gives credit to God, the amazing staff, Rock black belts, and the next generation of hard working leaders and champions to make his dream possible.

Darin is married to his soul mate and life partner, Kristin Carr. Together, they have two of God’s most beautiful creations, Jadeyn and Ashtyn Carr. The Carr family loves traveling, great meals, finding a balance between crazy schedules, school, lazy days together on the couch, and new adventures of many kinds. Darin and Kristin give credit for the name “The Rock” to God and named it that after The True Rock of their lives, Jesus Christ.

Darin Carr

Andrew Prueitt

Andrew Prueitt started training at The Rock with his two younger brothers when he was 12 years old. As one of the first students at The Rock, he quickly developed a passion for martial arts and would often train at The Rock 6 days a week, and any down time at home was spent reviewing forms and techniques with his brothers.


After earning black belt, he never quit training despite going out of state for college, serving a two year mission for his church in Guatemala, and working at various other jobs in between. Throughout it all, Andrew always returned to The Rock because it had become something more than just martial arts; it had become family.


Today, Andrew is still here sharing his love of martial arts as a full time instructor. He also teaches fitness classes and offers one on one training as a certified personal trainer.


Andrew is married to his wonderful wife Ashley and they enjoy exploring the Colorado mountains and trails with their daughter Aria, and dog Toby.

Sheri Trevenna

Sheri Trevenna has been a member of The Rock Family since 2001. She started by taking the kickboxing classes and then was quickly inspired by her Rock mentors to begin training in Tae Kwon Do. Now as a third dan black belt, Sheri has mentored and inspired other martial artists along their own journeys to black belt. In addition to her love of martial arts, she has found her passion teaching the 9:15 am Tuesday and Friday fitness classes. Sheri’s motivation, enthusiasm, and commitment empower others to reach their fitness goals.

Sheri has been married to her husband, Mark, since 1989. They are the proud parents of two amazing sons, Eric and Evan. Sheri’s life experiences are very eclectic ranging from working on a municipal bond trading desk prior to choosing the life of a stay at home mom, substitute teaching, becoming a certified wellness coach, and volunteering countless hours at her boys’ schools and soccer clubs. She enjoys working in the yard with Mark, cooking for family and friends, playing golf, cycling, and hiking. Whatever the activity or task at hand, Sheri does it with a high level of energy and dedication.

Amanda Baker

Amanda Baker has been training at The Rock since 2011. She knew from the beginning that she had a love for martial arts, which soon turned into a passion. Now a 2nd dan black belt, she loves teaching kids of all ages and inspiring them to achieve their goals throughout their journeys to black belt while still continuing to learn and grow herself.


Amanda enjoys time spent camping, hiking, and fishing with her family and friends, as well as participating in Track and Field and other activities at school. In the future, along with continuing her martial arts journey, she wants to work towards becoming a Veterinarian. She is always up for a new adventure and can’t wait to see what the future brings.