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 26.2 miles (42 km) in Calabasas, California. The next edition is on Saturday, January 30, 2027. The race gives its climbing as 5,692 ft (1,735 m).
There are 115 other upcoming marathons in California. Sean O'Brien 100K/50M/50K/26.2/30K climbs about 217 ft a mile (41 m per km), steeper than 90% of the 476 marathons listed with their climbing.
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 26.2 miles (42 km).
How much elevation gain does Sean O'Brien 100K/50M/50K/26.2/30K have?
Sean O'Brien 100K/50M/50K/26.2/30K has 5,692 ft (1,735 m) of elevation gain, as the race states it.
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.
How hilly is Sean O'Brien 100K/50M/50K/26.2/30K?
Sean O'Brien 100K/50M/50K/26.2/30K climbs about 217 ft a mile (41 m per km), steeper than 90% of the 476 marathons listed with their climbing.
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
- Folsom Lake Sweetwater Trail Run 30K · Jan 23, 2027
- Folsom Lake Sweetwater Trail Run Marathon · Jan 23, 2027
- La Cuesta Ranch Trail Run 30K · Jan 23, 2027
- Pacifica Foothills Trail Run 30K · Jan 23, 2027
- Sean O'Brien 100K/50M/50K/26.2/30K 30K · Jan 30, 2027
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