The 2025 Quicksilver Endurance Runs will be held on Saturday, May 10, 2025.
Updates:
1/3/2025: The 100k race is now full, and any additional entries will be added to the wait list. If any currently entered runners withdraw from the race, then the next person on the wait list will be offered a chance to enter the race.
1/25/25: The 2025 Runner’s Guide is now available.
Quick Facts:
The 100K:
4:30 am start
13,000+ feet of elevation gain
All official finishers (within 17 hour time limit) qualify for the Western States 100 lottery!)
The Quicksilver Endurance Runs are USA Track & Field-sanctioned events. The 100K is part of the USATF Pacific Mountain-Ultra-Trail Grand Prix.
The 50K:
7:00am start
6,000+ feet of elevation gain
4:00pm cutoff at mile 22
Plus, great swag and post-race party.
Race Summary:
100K
Start time - 4:30 am from the Hacienda entrance of the Almaden Quicksilver County Park. You are required to have a light source to start. You can drop off your headlamp in the collection box at the Wood Road A/S and it will be returned to the finish where you, your pacer, or crew can retrieve it. Please label with your name.
Distance – 62 Miles
Elevation gain – 13,000+
Time Limit – 17 hours (All official finishers qualify for the Western States 100M lottery.)
It is recommended that you print this one pager and carry it with you so you have easy access to the aid station chart, cut-off times, and map on race day.
50K
Start time - 7:00am
Distance – 30.3 Miles
Elevation gain – 6,000+ ft
Cutoff– 4pm at mile 22
It is recommended that you print this one-pager and carry it with you so you have easy access to the aid station chart, cut-off times, and map on race day.
Maps and Elevation (Updated 4/13/24 to clarify turn-by-turn directions near McAbee A/S.)
100K
Volunteers
This year we are making it easier for volunteers to pick the time and location they want to work. Click on the link below to see the open positions and if you are able, please register. Prior to the race will send additional information and reminders using either the registration web site or email, depending on the situation.
If you aren't running, I hope you can volunteer. Feel free to forward this email to your friends and contact me with any questions. See you on the trails!
Bob Callahan
QRC Volunteer Coordinator
Race Recaps
Sponsors
We are privileged to receive support in the form of donations, discounts, and assistance from the companies and organizations listed below. Please help us show our gratitude by supporting them in return.
Benefactors
To this date, from all our races, we have donated over $100,000 to numerous organizations and charities.
Video
Please check out this fantastic video about the 2015 Quicksilver 100K that was created by The Ginger Runner: