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Quicksilver Endurance Runs

San Jose, United States • 10 May 2025

The Quicksilver Endurance Runs, taking place in San Jose, CA, features both 50K and 100K races on scenic, hilly trails. Celebrating its 40th edition, the event offers participants a chance to run through beautiful oak forests and meadows, with stunning views of the Santa Clara Valley and Santa Cruz Mountains. The challenging courses are supported by friendly aid stations, making it an excellent choice for first-time ultra-marathoners. Notably, 50% of the race proceeds benefit non-profits focused on children's health and trail advocacy. The event emphasizes community involvement, relying on over 100 volunteers to ensure a successful race day. Visit the organization's website for the most recent information.

United States California San Jose

Race information

Website Registration
100 km
13000 m+
100k
50 km
6000 m+
50k
Visit the organization's website for the most recent information.
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