Cerox + Iron
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CEROX + IRON
CEROX + IRON is a functional fitness event held in Frederick, CO on July 25, 2026 at 3771 Monarch Street, Unit F & G. The event offers two formats: Cerox, which combines running with station work, and Cerox Iron, which uses the same stations without the running component.
Participants may enter as individuals or as teams of two. Teams can divide the work across the eight fitness zones however they choose.
The Cerox format follows a repeated pattern of runs and station work: 400M run alternating with eight zones that include a 400M row erg; 30 deadlifts (155/105); a 400M ski erg; 20 sandbag overs a 4' bar (100/70); 75M walking lunges (RAM 55/33); a 200M farmers carry (2 x 60/40); 30 calories on an echo bike; and 30 burpees to plate. The Cerox Iron format includes the same eight zones in the same order but omits the running segments.
The event lists separate individual and team entries for both Cerox and Cerox Iron. Equipment, repetitions, and weights are specified for each zone as noted above. Visit the organization's website for the most recent information.
