Race Discovery
CEROX IRON + IRON X
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2025 - CEROX IRON + IRON X

Frederick, Colorado, United States View on map
Nov 15, 2025 (America/Denver local time)
Running

2025 distances

Running

Cerox Iron Individual

The event will feature 8 fitness zones no running, designed to test your endurance, strength, and grit.

Nov 15, 2025 Cerox Iron Individual 12:00 PM
$40.00
Closed

Cerox Iron Teams of 2

Nov 15, 2025 Cerox Iron Teams of 2 2:00 PM
$35.00
Closed

Cerox Iron X Individual

Nov 15, 2025 Cerox Iron X Individual 11:00 AM
$45.00
Closed

Cerox Iron X Teams of 2

Nov 15, 2025 Cerox Iron X Teams of 2 1:00 PM
$40.00
Closed

Race-day weather

Conditions on November 15, 2025 — historical Open-Meteo data.

Temp (°C)
Minimum temperature (recorded on race day) 7.7° / Maximum temperature (recorded on race day) 21.9°
Feels Like (°C)
Minimum feels like — heat index / wind chill (recorded on race day) 4.2° / Maximum feels like — heat index / wind chill (recorded on race day) 21.9°
Peak wind (km/h)
Strongest wind of the day (recorded on race day)
22.2
Precip (mm)
Precipitation over the day (recorded on race day)
0.0mm
Humidity
Mean relative humidity (recorded on race day)
29.0%
Sunrise
Sunrise at the start line on November 15, 2025 (MST)
Sunset
Sunset at the start line on November 15, 2025 (MST)
Daylight
Hours between sunrise and sunset on race day
9h 57m

The sun rises at 6:45 AM and sets at 4:43 PM local time (MST) in Frederick on November 15, 2025 — 9h 57m of daylight.

Course

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.

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Other races near Frederick

Different organizers, within 40 miles, in the next three months

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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, 7 Frederick events

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