Trail · 50K
Sean O'Brien 100K/50M/50K/26.2/30K
Calabasas, CA
Sean O'Brien 100K/50M/50K/26.2/30K is a trail race of 31.1 miles (50 km) in Calabasas, California. The next edition is on Saturday, January 30, 2027.
There are 68 other upcoming 50K races in California.
31.1miDistance
63°Flow 46°FTypical race day
Questions about Sean O'Brien 100K/50M/50K/26.2/30K
When is Sean O'Brien 100K/50M/50K/26.2/30K 2027?
Sean O'Brien 100K/50M/50K/26.2/30K 2027 is on Saturday, January 30, 2027.
Where is Sean O'Brien 100K/50M/50K/26.2/30K?
Sean O'Brien 100K/50M/50K/26.2/30K is held in Calabasas, California.
How long is Sean O'Brien 100K/50M/50K/26.2/30K?
Sean O'Brien 100K/50M/50K/26.2/30K is 31.1 miles (50 km).
What is the weather usually like at Sean O'Brien 100K/50M/50K/26.2/30K?
Around Sean O'Brien 100K/50M/50K/26.2/30K's date, the day's high is typically about 63°F (17°C) and the low about 46°F (8°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
- Folsom Lake Sweetwater Trail Run 50K · Jan 23, 2027
- Calico Trail Run 50K · Jan 24, 2027
- Fort Ord Trail Run 50K · Feb 6, 2027
- Jed Smith 50K · Feb 6, 2027
- Mt. Umunhum Trail Conquest-Winter 50K · Feb 6, 2027
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