Call Us: (617) 637-8900


All About The Grit

Iron & Grit stands out in Boston because we make CrossFit accessible to everyone! We take the complicated and break it down for each level of athlete. The community stands out as an exemplary gym for inclusiveness and the coaching staff sets a high standard of excellence.

What We Do

We are dedicated to the vision of Coach Glassman; every individual can achieve optimal health through a program that includes high intensity training and is constantly varied. The General Physical Preparedness program at Iron & Grit is developed by Brandon Peterson the founder and owner of Complete Athletic Performance. Coach Peterson’s belief that the sport of fitness is fueled by competition and community is at the heart of our community.

I started Iron & Grit because I believed we could change the lives of people in Boston through fitness. To find a coach like Brandon Peterson who is as dedicated to excellence and community as we are is the most rewarding experience. As a coaching staff we look forward to the challenge that Coach Peterson brings to our gym’s program.

  • Clean Bathrooms
  • Private Showers for your convenience
  • Complimentary Towel Service
  • Shower Amenities
  • Free Cubbies For Storing Your CrossFit Gear
Retail Store
  • FitAid, Water
  • Free Coffee
  • Exendurance Protein and Supplements
  • Iron & Grit Apparel including t shirts, tanks and hoodies
  • Arrowhead Athletic Tape
  • Paleo Power Meal Delivery Every Monday

Our Trainers

Fill out the form to schedule a Fitness Assessment with our professional trainers: