Early registration for May 2021 registered entrants opens July 16 at 8am PT and later during the day for prior year runners with a credit. Watch for an email with a direct invitation link to register. This link is linked to your registration status and cannot be shared.
50K & 100K description
Great course, great volunteers, great swag, and great post-race BBQ! (well that last one was true before Covid)
Join us for the 37th edition of the Quicksilver Endurance Runs. The 50K and 100K races are run on scenic, hilly single track trails and fire roads. You will run through peaceful oak forests, wide-open meadows, and along ridges with spectacular views of the Santa Clara Valley and the Santa Cruz Mountains. Although the course is very challenging, the friendly aid stations and beautiful scenery make Quicksilver an excellent choice for a first trail ultra-marathon. Run for a good cause: 50% of the race proceeds go to non-profits that help kids stay healthy or fund trail advocacy projects.
Both Races will start at the Hacienda Entrance of the Almaden Quicksilver County Park (21785 Almaden Road, San Jose, CA 95120).
About each event
Start Time: 4:30am
~13,000+ feet of elevation gain
Western States 100 qualifying race, 4 points towards qualifying for the UTMB
17-hour time limit (16-hour time limit for Western States qualification)
PA/USATF Ultra Grand Prix Event
Start Time: 7:00am
~6,000+ feet of elevation gain
4:00pm cutoff at mile 22.
Waitlist and refund policy
If your preferred distance is full, you can add your name to the waitlist (your credit card will only be charged if a spot becomes available for you AND you accept that spot).
Runners who need to cancel their registration are eligible for a 30% rollover of their race registration fee prior to 8/23/2021: cancel your registration via your registration history or via the "Edit" link on your receipt. After 8/23/2021, there will be no refund or credit of entry fees for any reason and under any circumstances.
This race would not be possible without the 100+ volunteers who help the runners have a great day on the trails. Please consider volunteering and sign up here: http://www.quicksilver-running.com/100k50kvolunteer
Local time: 11:49 AM