CrossFit Kells


Loves Fitness.
Hard-working. Friendly.

Dedicated to Your Goals.


These are the men and women who are going to help you find your “why.” Because when you find the “why” behind your “want,” your limits disappear. These experienced coaches will be the ones to push you, encourage you, educate you, and help you become the best version of yourself.

Mike McGoldrick


Sports have always been a major identifying influence in my life. Growing up in a suburb north of Boston, there wasn’t a time when I wasn’t playing football, basketball, baseball or any other activity I could find. I am a firm believer in the impact that athletics can bring to individuals life, particularly in the area of relationships. I have seen first hand the lasting bonds that can be formed on the playing field, and discovering CrossFit has allowed me to continue to form those bonds. I began CrossFitting at the age of 34 in 2009, and am easily in the best shape I have ever been – surpassing years of focusing on weightlifting, running, and endurance events. None of these activities provided the dynamic results that CrossFit has for me.

We can all become more formidable human beings, and CrossFit is an extremely effective prescription to help us along that journey. I am a true believer in the notion that the physical, mental and emotional fortification that CrossFit provides is directly translatable to other parts of our lives. We are all trying to get better, whether personally, professionally, socially or physically; the “why” is different for all of us. At CrossFit Kells, our sincere mission is to provide a challenging environment that facilitates the betterment of all of the “why’s” in our community.

Driving change is incredibly hard work, but the rewards that accompany the kind of change that we are forging here are immeasurable. Done correctly, CrossFit will not only improve your physical well being…it will shape your mental toughness in ways you may not expect. It is our honor and privilege as coaches to contribute to the transformation of the Kells community, and we are grateful for the opportunity to have you in our lives.


  • CrossFit Level 1
  • CrossFit Weightlifting

Erin Porter


If it is fitness related – from working out and training at gyms, to preparing for and racing in triathlons – I have done it. Being active and keeping fitness a priority has always been a part of my life, but until I found CrossFit it was really just a routine that I felt I needed to keep up with. I can honestly say, and it sounds cliche, but CrossFit transformed me physically, emotionally and most importantly mentally.

I have done things in this sport that physically I never believed I was capable of, and in turn It has emotionally and mentally made me a stronger, more well- rounded person. For the last 3 years of my life I have been able to wake up and get excited about going to work (if thats what you can call it). Not because of the laid back atmosphere and ability to wear sweatshirts and yoga pants everyday, but because of the relationships I have been a part of and the lives I have watched get better because of CrossFit. I realized pretty early on that I not only wanted to be a very good CrossFit athlete, but I wanted to create many good athletes.

Everything I know, everything I have learned, and everything I now teach was from a coach who has more passion for this sport than anyone I know. I firmly believe that my love for CrossFit grew from being coached from someone who cares so deeply about the fundamentals of CrossFit, and it is my goal to be able to do the same thing for my athletes.

Not only do I get to do what I absolutely love every single day, but I get to transform lives every day as well. I can’t call it “work”, because it is not. It’s as simple as caring enough about other people, and about how they want to look and feel. I feel that I have a genuine relationship with every single person that I have ever trained and coached, and I get just as excited for them when they achieve a goal as they do for themselves.

I watch my daughter mimic the movements and exercises I do, and I realize I am doing the right thing with my life. I am proud and lucky that she can imitate me, and wants to “teach classes”. I am content in the fact that I have chosen a lifestyle that will undoubtably make her choose healthy choices, and also see the benefit in helping others.


  • CrossFit Level 2
  • CrossFit Kids
  • CrossFit Olympic Lifting Certificate
  • CrossFit Gymnastics Certificate
  • Precision Nutrition Certified Consultant

    Jim Monaghan


    Jim Monaghan, who is a magician as well as a CrossFit coach, believes that learning basic movements is the key to longevity and sustainability for new CrossFit athletes. “I do a lot of research to help members find different ways to progress into the ‘fancier’ CrossFit movements,” he says.

    Jim’s high school athletic career included hockey and track and field, and he also lead an off-season conditioning program. More recently, he finished Sealfit20x, and he’s also Army Airborne. Jim became a CrossFit coach by a twist of fate. “I enjoyed CrossFit so much I wanted to help other people get the best out of it,” he says. “My wife got me my level 1 cert for Christmas and, coincidently, my good friends opened up CFK!”


    • CrossFit Level 1
    • CrossFit Strong Man Certification

      Courtney Garner


      When I first started CrossFit I had zero sports background and a lot of extra weight to carry around. CrossFit has changed me, both physically and mentally, and I can’t imagine my life without it now.

      The atmosphere at Kells made me want to become a better athlete, forcing me to dial in my nutrition and work on my weaknesses. I can do things now that I didn’t ever expect to do when I first joined, and I’m sure our members would say the same. After experiencing the coaching and seeing major improvements in my workouts as an athlete, I knew I wanted to provide that for others and become a part of the coaching staff.

      I wake up so excited to go to Kells everyday and work with the members and other coaches.  I love to see members practicing a certain skill whether it’s pull ups or double unders and then eventually crush them in a workout. Kells is a truly special place and I’m extremely proud to be a part of it.

          Andrew Zaro


          I was born and raised in Hanson, MA, and sports and fitness have always been a large part of my life. Soccer had been my primary sport as early as I can remember, but baseball, basketball, hockey, lacrosse, swimming, surfing, skiing and wiffleball (‘95 Backyard Wiffleball Champion) saturated my days up through college. 13 years in the Marine Corps took my understanding of physical fitness to a whole new level: combat patrols w/70-100lbs of gear, 1 mile open-water swim rescues as a Marine Corps Instructor of Water Survival, hundreds of hours earning a Black Belt in the Marine Corps Martial Arts Program. Physical and mental toughness became a required trait – something I still try to hone every day.

          I found Crossfit around 2012, and it quickly became something that I was drawn to both for its profound effects on my physical and mental abilities, but also due to the challenge it provided me in the gym. Concepts and movements that are simple in principal, but, when implemented correctly, yielded incredible results. Gymnastics and weightlifting became an obsession for me. I fell in love with that challenge that has still not gone away for me with Crossfit.

          The journey in pushing my boundaries of fitness, refining my gymnastics and weightlifting movements, and also helping others with what I’ve learned through my process is what keeps me coming back for more. Outside of the gym, I prioritize my family time – the beach, hiking, movies, board games. I most always am eating something, cooking something, or planning to do one or the other very shortly. I’m a die-hard Bruins fan. Reading is a huge passion of mine – Cold War espionage non-fiction is genre of choice. I love traveling. I’m addicted to coffee. My biggest weakness is coffee ice cream, though it’s also my biggest strength.

              Mike Norton


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                  TIME TO GET STARTED!

                  1. Schedule Your No-Sweat Intro

                  Talk 1-on-1 with a Coach about your goals and learn how CrossFit Kells can get you In your BEST Shape!

                  2. Start Your Training

                  Schedule your first class with your coach and just show up! The first several weeks are about showing up, learning the basics and most of all HAVING FUN!

                  3. Start Reaching Your Goals

                  Now that you have learned the basics, results are coming fast! Your friends are asking you what changes you have made and you are enjoying challenging workouts with awesome people. You are living thE Motto: Get Fit, Have Fun and Enjoy Community!

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                  CrossFit Kells

                  14 Chestnut St
                  Duxbury, MA 02332
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                  Need to Call us? 781.585.3018

                  Our 5,000-square-foot facility is located less than four minutes off of Exit 10 on Route 3 in Duxbury, MA.


                  We welcome drop-in’s from other gym's all over the world!  Come on by, we’d love to meet you. Drop-ins are just $25/day!

                  CrossFit Kells

                  14 Chestnut St
                  Duxbury, MA 02332
                  Get directions

                  Need to Call us?


                  Our 5,000-square-foot facility is located less than four minutes off of Exit 10 on Route 3 in Duxbury, MA.

                  Getting Started Is Easy!

                  Simply fill out the form below and then schedule Your FREE No-Sweat intro Consultation on the next page.

                  Shortly after we will be in touch with you to confirm your intro session.

                  We are excited to meet you!