Calling all fitness enthusiasts—this November 15th event in Frederick, CO brings you a challenging, run-free workout experience with 8 different fitness zones that'll push your endurance, strength, and mental toughness. Pick your intensity: Cerox Iron follows the classic zone setup, while Cerox Iron X doubles the work with twice the reps for serious grinders. Go solo or team up with a partner, with waves starting at 11 AM, and tackle exercises like rowing, deadlifts, skiing, sandbag work, lunges, farmers carries, bike sprints, and burpees across all the zones.