Ultra events in Santa Clara County, California
9 ultra events — 1 upcoming, 8 past
1Upcoming event
Santa Clara County
1 upcoming · 8 past-
Sat, Aug 15, 2026 at 8:00 AM
Past events in Santa Clara County
8 previous events| Event | Last held | Organiser |
|---|---|---|
|
Quicksilver Endurance Runs
50k100k
|
May 2026 | |
|
Hacienda Hills Trail Run - Spring
5k10k9 Miles30k50kHalf Marathon
|
May 2026 | |
|
Sierra Azul Trail Challenge
5k7 Miles20 Miles50kHalf Marathon
|
Apr 2026 | |
|
Terrible, Horrible, No Good, Very Bad Day 50k
50k
|
Mar 2026 | |
|
Mt. Umunhum Trail Conquest-Winter
5k30k50kHalf Marathon
|
Feb 2026 | |
|
Almaden Hills Trail Run - Fall
5k10k8 Miles30k50kHalf Marathon
|
Nov 2025 |
Sorted by most recent. Past events are kept permanently in this archive.
Full Santa Clara County archive →