Quicksilver 100K & 50K
Race Day Weather
Cool start, warming trend
Runners will face a temperature rising from 50°F at the start to 82°F by the finish. A light breeze from the W will provide some comfort, but humidity at 65% will make it feel warmer. Runners should start conservatively and consider adjusting their pace as temperatures climb, ensuring adequate hydration throughout the race.
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Race Info
The Quicksilver 100K and 50K races in San Jose, California, offer runners a challenging journey through the historic Almaden Quicksilver County Park. Participants traverse hilly single-track trails and fire roads, passing by landmarks such as the San Cristobal Mine and the Hidalgo Cemetery, while enjoying panoramic views of the Santa Clara Valley and the Santa Cruz Mountains. The 100K course features over 13,000 feet of elevation gain, making it a Western States 100 Mile Endurance Run qualifier, while the 50K course includes more than 6,000 feet of elevation gain. Both events start and finish at the Hacienda Entrance to Almaden Quicksilver Park, concluding with a post-race barbecue under the park's iconic oak trees.
