Trail · Marathon
Iron X
Auburn, CA
Iron X is a trail race of 26.2 miles (42 km) in Auburn, California. The next edition is on Saturday, July 10, 2027. Registration is open to all.
There are 115 other upcoming marathons in California.
26.2miDistance
97°Flow 64°FTypical race day
Questions about Iron X
When is Iron X 2027?
Iron X 2027 is on Saturday, July 10, 2027.
Where is Iron X?
Iron X is held in Auburn, California.
How long is Iron X?
Iron X is 26.2 miles (42 km).
How do you get into Iron X?
Iron X has open registration.
What is the weather usually like at Iron X?
Around Iron X's date, the day's high is typically about 97°F (36°C) and the low about 64°F (18°C), averaged over recent years.
What other marathons are there in California?
Other upcoming marathons in California include Crafton Hills Endurance Run (November 14, 2026), Santa Clarita Marathon (November 15, 2026) and Griffith Park Trail Marathon (November 21, 2026).
Other races in California
- Headwaters Trail Runs 34K · Jun 19, 2027
- Elder Creek Night Runs 30K · Jul 17, 2027
- Lost Sierra Endurance Race 25K · Jul 23, 2027
- Harding Hustle 30K · Jul 24, 2027
- San Francisco Marathon Marathon · Jul 25, 2027
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