Roger Harrell

Roger comes to CrossFit Marin with over 20 years of experience in gymnastics, and over 15 years of coaching experience. His passion for fitness is contagious. His technical knowledge and scientific approach help to refine everything we do. Roger holds a B.S in Chemical Engineering and spent several years working on enormous processing plant projects, ore refinement systems and chemical weapons disposal facilities. Throughout it all he has kept a hand in coaching and training and has finally dedicated full time to his true passion. Roger has been involved in CrossFit since the early days and is also the gymnastics curriculum writer and core competency expert for the global CrossFit community.

• Level 3 CrossFit Certification
• Founder CrossFit Gymnastics Certification Program
• Co-Founder CrossFit Marin

Andrés De La Rosa

Andres has an extensive background in many sports, including baseball, track & field, soccer, rock climbing and gymnastics. He brings a diverse knowledge to the CrossFit Marin team. In his 12 years of experience coaching gymnastics he has helped many athletes excel. His persistence will help you carry on when you find it difficult

• Level 1 CrossFit Certification
• Co-Founder CrossFit Marin

Russell Bruel

Russell is our resident kinesthetic genius. A lifelong gymnast and coach, Russell's understanding of the mechanics of movement and his patience will bring you to new levels of ability.

• Level 1 CrossFit Certification

Nick Wise

Nicholas Wise has an extensive martial arts background, having studied various forms of self defense since 1985. He holds black belts in two styles, and has been coaching students of all ages in practical self defense and martial arts since 1999. He has worked in a several public safety sectors, including security and emergency medical services, and recognizes the importance of being able to transfer skills learned in the gym to real-world situations. He discovered CrossFit in 2007 and quickly came to see the importance of general physical preparedness to surviving violent or extraordinary situations.

• Second Degree Black Belt Nidan) in Judo
• First Degree Black Belt (Shodan) in Hawaiian Jujitsu

Andrey Pfening

Andrey Pfening was born in Samarkand, Uzbekistan and raised in Samara, Russia. He descends from a modest family in San Francisco, USA. He spent the first 5 years of his life in Samarkand, later 6 years in Samara, and now it's been 8 years since he resides in San Francisco.

San Francisco was his first city that he used as an obstacle course for practicing the physical activity that is called "parkour," also known as "the art of movement." Andrey was inspired by David Belle's (originator of parkour) physical abilities and his philosophy, as were many other practitioners of parkour. Andrey began practicing at the age of 16, and to this very day he still continues his journey of life as a traceur (practitioner of parkour).

Before parkour Andrey was motivated by his father (who as a young man was on a cycling team in Samarkand) to ride bicycles. Even though Andrey developed a strong interest in parkour, he still enjoys cycling, and from time to time goes out to bike around the Bay Area.

Amy Harris

Amy Harris has been working with young children for years. As program director for other facilities she has developed progressive developmental programs for our little ones. Utilizing music and directed play Amy will help your children develop their motor skills. With a deep love for helping to develop confidence through movement she knows how to properly encourage and reward children for broadening their experiences. Amy loves to work with the parent/child relationship at the physical, emotional and social levels.

• Marriage and Family Therapist Trainee, children, families and individuals
• MA candidate for Counseling Psychology at California Institute of Integral Studies

Bill Berry

Bill came to Crossfit Marin as its first athlete at age 53. After playing baseball and basketball in high school, Bill played different sports (basketball, tennis, golf, water skiing, snow skiing and jogging) on and off for about 30 years. Recognizing the need to become more fit with age, he began crossfit after asking Roger to help him get into shape. Bill has seen continual improvement in times and weights through the years; also losing 40+ pounds over the years. Bill has participated in the 2009, 2010 Crossfit Games and in 2011 finished in the top twenty in the Masters 55-59 division of the games. After training for about 2 1/2 years, Bill began coaching. Having served as lead pastor of a church in Marin for over 30 years, Bill is an experienced coach in helping people make life changes. Bill has now been part of the coaching team since January of 2009. Bill has been married to his wife Connie since 1973, he has three children, all married and seven grandchildren.