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, challenging trails. Celebrating its 40th edition, the event offers runners a chance to experience beautiful oak forests, meadows, and stunning views of the Santa Clara Valley and Santa Cruz Mountains. The races are designed for both seasoned ultra-marathoners and newcomers, with friendly aid stations and a supportive atmosphere. Notably, 50% of the 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.

Race information

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