Get ready for a functional fitness challenge built for all abilities.
Cerox is back, and this time, there’s no running. Just pure work.
You’ll take on 8 fitness zones designed to test your endurance, strength, and grit. Choose your level of challenge:
Cerox Iron: The same zones as the classic Cerox event, but without the running.
Cerox Iron X: Twice the grind, none of the miles. Double the reps, double the work.
You can sign up as an individual or with a partner team. Teams can divide the zone work however they choose.
Estimated Wave Time:
11 AM: Iron X Individual
12 PM: Iron Individual
1 PM: Iron X Teams
2 PM: Iron Teams
Get your tickets now and be part of the action on November 15th!
Cerox Iron Workout:
Zone 1: 400M Row Erg
Zone 2: 30 Deadlifts - 155/105
Zone 3: 400M Ski Erg
Zone 4: 20 Sandbag Over 4' Bar - 100/70
Zone 5: 75M Walking Lunges - RAM 55/33
Zone 6: 200M Farmers Carry - 2x 60's/ 40's
Zone 7: 30 Cal. Echo Bike
Zone 8: 30 Burpees to Plate
Cerox Iron X Workout:
Zone 1: 800M Row Erg
Zone 2: 60 Deadlifts - 155/105
Zone 3: 800M Ski Erg
Zone 4: 40 Sandbag Over 4' Bar - 100/70
Zone 5: 150M Walking Lunges - RAM 55/33
Zone 6: 400M Farmers Carry - 2x 60's/ 40's
Zone 7: 60 Cal. Echo Bike
Zone 8: 60 Burpees to Plate
May 09, 2026
Distance — Cerox Iron X Individual
Type — Others
11:00
$45.00
May 09, 2026
Distance — Cerox Iron Individual
Type — Others
12:00
$40.00
May 09, 2026
Distance — Cerox Iron X Teams of 2
Type — Others
13:00
$40.00
May 09, 2026
Distance — Cerox Iron Teams of 2
Type — Others
14:00
$35.00
These values represent the 3-year monthly averages for May in Frederick.
Frederick is a charming city of approximately 80,000 people (2020) in Maryland. It is a major antique center with many shops, eateries, galleries and antique dealers.
Read more launchExplore other exciting events happening in this same region.
location_on Longmont, Colorado, US
calendar_today May 02, 2026
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