30 miles of mining history through Silicon Valley's best trail park
Other trail races within 125 miles
The Quicksilver Endurance Runs 50K is a 30.3-mile loop through Almaden Quicksilver County Park, sharing the first and final sections of course with the 100K sibling race. Starting at 7am from the Hacienda entrance, runners climb 6,000+ feet through historic mercury mining trails — past the old rotary furnace at English Camp and through the New Almaden Trail's finest singletrack — before looping back to the finish. With a single intermediate cutoff at McAbee Aid Station (mile 22), the course is accessible to trail runners building up to longer distances while still offering a true challenge.
Some ultra experience recommended
San Jose, CA, United StatesMay 09, 2026
Quicksilver Endurance Runs 50K is a loop trail race in San Jose, CA, United States, held on May 09, 2026. The course covers 30.3 miles, climbs 6,000 ft, and has a 9h30m cutoff.
| Location | Mile | Elevation | Cutoff | Crew | Pacers | Drop bags |
|---|---|---|---|---|---|---|
Start - Hacienda Start | 0.0 | 482 ft | — | Crew | Drop Bags | |
Hicks Road - 1 Aid Station | 6.1 | 1,434 ft | — | |||
Hacienda Aid Station | 9.7 | 482 ft | — | Crew | Drop Bags | |
Mockingbird Aid Station | 12.8 | 518 ft | — | Crew | ||
Bull Run - 1 Aid Station | 16.7 | 1,552 ft | — | CrewHike in | ||
McAbee Aid Station | 22.4 | 384 ft | 9h30m4:30 PM | CrewHike in | Pacers | |
Bull Run - 2 Aid Station | 27.3 | 1,552 ft | — | CrewHike in | ||
Finish - Hacienda Finish | 30.3 | 482 ft | 9h30m4:30 PM | Crew | Drop Bags |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
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