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Quicksilver Endurance Runs

May 09, 2026 at 4:30 AM

Almaden Rd, San Jose CA, 95120, USA

The 100K filled up rapidly this year. We will have a waitlist and it’s likely we’ll accept a lot of people from the wait list as we did last year.

The two courses will be the same that we’ve used for the previous three years, and only slightly different than we used for the three years prior to that. We will have some great food and drinks for you after you finish, and the awesome celebratory atmosphere that you’ve come to expect from the Quicksilver Running Club.

The Quicksilver 100K race is a Western States 100 Mile Endurance Run qualifier as well as a UTMB qualifier (4 pts)!

The 100K:
4:30 am start
13,000+ feet of elevation gain
Western States 100 qualifying race
17-hour time limit (16-hour time limit for Western States 100 qualification)
4 points towards qualifying for the UTMB
PA/USATF Ultra Grand Prix event

The 50K:
7:00am start
6,000+ feet of elevation gain
4:00pm cutoff at mile 22

Plus, great swag and post-race party! Register here for 2024: https://ultrasignup.com/register.aspx?did=109628

Event History

2026
May 09, 2026
2025
May 10, 2025
2024
May 11, 2024
2023
May 13, 2023
2022
May 14, 2022
2021
Oct 23, 2021
2020
Oct 03, 2020
2019
May 11, 2019View Results →
2018
May 12, 2018View Results →
2017
May 13, 2017View Results →
2016
May 14, 2016View Results →
2015
May 09, 2015View Results →
2014
May 10, 2014View Results →
2013
May 11, 2013View Results →
2012
May 12, 2012View Results →
2011
Apr 30, 2011View Results →
2010
May 08, 2010View Results →
2009
May 09, 2009View Results →
2008
May 10, 2008View Results →
2007
May 12, 2007View Results →
2006
May 13, 2006View Results →
2005
May 07, 2005View Results →
2003
May 10, 2003View Results →
2002
May 11, 2002View Results →
2001
May 12, 2001View Results →
2000
May 13, 2000View Results →
1998
May 09, 1998View Results →