Cerox + Iron
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Event Details
The CEROX + IRON is a functional fitness challenge event scheduled for Saturday, July 25, 2026. It is held at 3771 Monarch Street in Frederick, Colorado.
Event Format and Challenges
Participants can choose between two main challenges: Cerox or Cerox Iron. Both formats involve completing 8 fitness zones designed to test endurance, strength, and grit.
The Cerox challenge includes the 8 zones plus running segments between them. The Cerox Iron challenge consists of the same 8 zones without the running portions.
Participation Options
Registration is available for four categories:
- Cerox Individual
- Cerox Teams of 2
- Cerox Iron Individual
- Cerox Iron Teams of 2
Teams can divide the work in the zones as they choose. The event features estimated start waves throughout the day.
The Workouts
The fitness zones for both challenges include:
- Zone 1: 400M Row Erg
- Zone 2: 30 Deadlifts
- Zone 3: 400M Ski Erg
- Zone 4: 20 Sandbag Over 4' Bar
- Zone 5: 75M Walking Lunges
- Zone 6: 200M Farmers Carry
- Zone 7: 30 Cal. Echo Bike
- Zone 8: 30 Burpees to Plate
For the Cerox event, each zone is preceded by a 400-meter run. Visit the organization's website for the most recent information.
