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Sean o'Brien

Calabasas, United States • 25 Jan 2025

The Sean O'Brien event features a range of trail running distances including 100K, 50M, 50K, Marathon (26.2 miles), and 30K, taking place in Calabasas, CA. This popular race is known for its scenic views and challenging terrain, attracting runners of various skill levels. The 100K distance serves as a qualifier for the prestigious Western States 100. Registration for the event is currently closed as it has reached full capacity. Participants can expect a well-organized event that showcases the beauty of trail running in a vibrant community atmosphere. Visit the organization's website for the most recent information.

United States California Calabasas

Race information

Website Registration
100 km
100k
50 mi
50 Miler
50 km
50k
42 km
26.2
30 km
30k
Visit the organization's website for the most recent information.
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