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The Big Alta

Lucas Valley-Marinwood, United States • 22-23 Mar 2025

The Big Alta is an exciting trail running event taking place in Marin County, California, organized by Freetrail and Daybreak Racing. Participants can choose between two challenging distances: a 50K and a 28K, both featuring scenic single-loop courses that showcase breathtaking views of the San Francisco Bay Area. The race routes include summits at Loma Alta and Big Rock Ridge, offering runners a rewarding experience filled with community spirit and vibrant race atmosphere. The event aims to provide a premium race experience, complete with professional organization, aid stations, and a celebratory finish line. Visit the organization's website for the most recent information.

United States California Lucas Valley-Marinwood

Race information

Website Registration
50 km
50K
28 km
28K
Visit the organization's website for the most recent information.
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