Trail · 50K
Doomsday
Cool, CA
Doomsday is a trail race of 31.1 miles (50 km) in Cool, California. The next edition is on Saturday, December 12, 2026. Registration is open to all.
There are 68 other upcoming 50K races in California.
31.1miDistance
53°Flow 36°FTypical race day
Questions about Doomsday
When is Doomsday 2026?
Doomsday 2026 is on Saturday, December 12, 2026.
Where is Doomsday?
Doomsday is held in Cool, California.
How long is Doomsday?
Doomsday is 31.1 miles (50 km).
How do you get into Doomsday?
Doomsday has open registration.
What is the weather usually like at Doomsday?
Around Doomsday's date, the day's high is typically about 53°F (12°C) and the low about 36°F (2°C), averaged over recent years.
What other 50K races are there in California?
Other upcoming 50K races in California include Mind Over Mountains (November 14, 2026), Griffith Park Trail Marathon (November 21, 2026) and Quad Dipsea (November 28, 2026).
Other races in California
- Calero Trail Run - Winter 50K · Dec 5, 2026
- Over The Hill Track Club High Desert 50K & 30K 50K · Dec 5, 2026
- Ray Miller 50/50 50K · Dec 5, 2026
- Hunter S. Thompson Fear & Loathing 50K · Dec 6, 2026
- Magnolia Magic River Trail Run 50K · Dec 19, 2026
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