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Quicksilver Endurance Runs

Name: Quicksilver Endurance Runs
Start: 2025-05-10
End: 2025-05-10
Location: San Jose

San Jose, United States • 10 May 2025

The Quicksilver Endurance Runs is an annual trail running event held in San Jose, California, featuring 50K and 100K races on scenic, challenging single-track trails and fire roads through oak forests, meadows, and ridges with panoramic views of the Santa Clara Valley and Santa Cruz Mountains. The 100K race is a Western States 100 qualifying event with a 17-hour time limit, while the 50K offers a 4-hour cutoff. Both races emphasize camaraderie, scenic beauty, and supporting non-profit causes that promote children's health and trail advocacy. The event includes fully-stocked aid stations, post-race food, and a vibrant volunteer community. Visit the organization's website for the most recent information.

United States California San Jose

Race information

Website Registration

100 km

100k

50 km

50k

Visit the organization's website for the most recent information.

Trail runs nearby

Thursday Nov 27

Zoom Turkey Trot

Celebrate Thanksgiving at the Zoom Turkey Trot in San Jose at Hellyer Park with a USATF certified half, 10K, 5K and kids runs, plus t shirts and finisher medals. Flat, fast courses and stocked aid stations welcome all abilities.

Saturday Nov 29

Quarry Turkey Half Marathon

Join the Quarry Turkey at Quarry Lakes on November 29 for a fast, mostly flat trail 5K, 10K or half marathon with a free kids sprint and family friendly Thanksgiving costumes encouraged. Proceeds benefit Alameda County Community Food Bank.

Saturday Dec 6

Zombierunner Quarry Lakes

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Choose distances from a kids 50 yard dash to a full marathon as you run scenic Quarry Lakes and the Alameda Creek Trail in Fremont. Enjoy stocked aid stations, finisher medals and pre registered shirts with park entry included.

Saturday Dec 6

Calero Trail Run - Winter

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Tackle scenic singletrack and dirt at Calero County Park in the Calero Trail Run Winter, with distances from a kids mile to a 50K. Expect rolling hills, oak vistas, aid stations, a finishers medal and race day registration.