About Us

Rocky Mountain Self Defense & Fitness (RMSDF) is a locally owned martial arts and fitness academy dedicated to building stronger, safer, and more confident individuals in the Castle Rock community. We specialize in Krav Maga, Citizen Defender, and ProjectFit—integrative programs that combine real-world self-defense, functional fitness, and CCW resilience and competency.

Our mission is to empower everyday people—men, women, and children—to protect themselves, improve their fitness, and develop leadership through discipline and confidence. RMSDF offers classes for all ages, including Kids & Teen Krav Maga, Women’s Self-Defense Workshops, and Corporate & Community Safety Seminars.

Founded and led by John Hallett, RMSDF has proudly served Castle Rock for over a decade, partnering with local