Pulling race details. Checking the course notes.
Pulling race details. Checking the course notes.

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CEROX + IRON is a functional fitness challenge taking place July 25, 2026, in Frederick, CO. Participants choose between two formats: Cerox, which includes eight fitness zones plus 400-meter running segments between zones, or Cerox Iron, which features the same eight zones without running. The eight zones include rowing, deadlifts, ski ergometer work, sandbag exercises, walking lunges, farmers carries, echo bike, and burpees. Athletes may compete individually or as two-person teams, with teams able to divide the work as they choose.
Distances
Distances as listed on a public calendar. Nothing about entry, timing or inclusions is on file.
Getting there
Frederick, CO. Exact start not reported.
Race reviews
Race-day experiences shared about CEROX + IRON 2026.
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