About

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  • Open today, 4:30pm - 8:00pm
  • (970) 310-7573
  • 5629 McWhinney Blvd
    Loveland CO 80538

Define Defense is Boulder’s premier place for modern martial arts, self defense and personal training. We are not the typical martial arts school as we incorporate personal training and fitness into our classes.

Our clients enjoy a blend of fight / self