CEROX IRON + IRON X
About this race
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
Pick your distance
Running
Cerox Iron Individual
The event will feature 8 fitness zones no running, designed to test your endurance, strength, and grit.
Cerox Iron Teams of 2
Cerox Iron X Individual
Cerox Iron X Teams of 2
Typical race-day weather
Based on 2 years of historical conditions on this event's race dates in Frederick.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Frederick
Different organizers, within 40 miles, in the next three months
Cerox + Iron + Iron X
The Pilgrimage Run 2026
PRA Miner Gold Rush
Big Waves Family 5K run/walk Presented by Brumate
🏃 Plan Your Next Race in Frederick
Find upcoming events by distance:
- Frederick Running Calendar 2026 5 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 5 Frederick events
Spotted something wrong? Tell us and we'll fix it.