A lifelong athlete and passionate coach, John Tzinberg brings years of experience and heart to youth endurance sports. As Coach and Team Coordinator for Murrieta Valley HS XC Coach, The Time Machine Youth Track & Field / Cross Country team, and coach of the MVHS Middle School Mountain Bike Team, he's known for his tough, supportive style that builds both performance and character. Coaching is John's way of giving back, helping the next generation grow in resilience, confidence, and maturity. He's committed to developing not just strong athletes, but strong individuals for life.