California · Half Marathon · 10K
Quicksilver Trail Challenge
Quicksilver Trail Challenge is a half marathon and 10K event held in San Jose, California. It was last held on October 17, 2026 and is usually run in October; the next date hasn't been announced yet.
- Usually held
- October
- Location
- San Jose, CA
Race details
- Last held
- October 17, 2026
- Usually held in
- October
- Location
- San Jose, California
- Distances
- Half Marathon, 10K
- Registration
- ultrasignup.com
- Official website
- quicksilver-running.com
Registration, course & weather
- Registration status
- Registration status as last checked September 28, 2026: open
- Start time
- 8:00 AM PDT
- Course profile — Half Marathon
- Loop course; Trail surface
- Course profile — 10K
- Loop course; Trail surface
About the Quicksilver Trail Challenge
The Quicksilver Trail Challenge is an annual Half Marathon, 10K, and kids' fun run put on by the Quicksilver Running Club at Almaden Quicksilver County Park in San Jose. The course shares trails with the club's spring 50K/100K ultramarathons, taking runners past historic mercury-mining landmarks with views of Mt. Umunhum and the Santa Cruz Mountains.
More half marathons in California
Coming up next, by confirmed date.
-
Dia De Los Muertos Half Marathon & 5K Run/Walk (Bakersfield)Bakersfield, CAHalf Marathon5K2 Mile Speed Walk
More races in San Jose
More upcoming races in California
-
The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow RunsLong Beach, CAHalf Marathon5K10K
Keep exploring
- All races in California
- 5Ks in California 459 upcoming races
- 10Ks in California 316 upcoming races
- Half Marathons in California 197 upcoming races
- Marathons in California 41 upcoming races
- Running in San Jose 11 upcoming races
- 10Ks in the United States 2,755 upcoming races
- Half Marathons in the United States 1,828 upcoming races
- Fall Half Marathons
- October Half Marathons
- October races in California
- Half Marathons in Arizona 54 upcoming races
- Half Marathons in Nevada 35 upcoming races
- Half Marathons in Oregon 29 upcoming races
Guides from the RaceRove blog
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Quicksilver Trail Challenge: common questions
- When is the Quicksilver Trail Challenge?
- The next date hasn't been announced in the listing yet. The race is usually held in October. Check the organiser's website for the official date.
- Where is the Quicksilver Trail Challenge held?
- In San Jose, California.
- What distances does the Quicksilver Trail Challenge offer?
- Half Marathon and 10K.
- How do I register for the Quicksilver Trail Challenge?
- Registration is handled by the organiser at ultrasignup.com. Entry fees, caps and deadlines are set there.
- Is registration open for the Quicksilver Trail Challenge?
- Registration status as last checked September 28, 2026: open. Listed fee for the longest distance, $71.56 (from quicksilver-running.com, checked September 28, 2026).
- What time does the Quicksilver Trail Challenge start?
- 8:00 AM PDT.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.