Trail 100k events in California, United States
Find trail 100k events in California, United States. Compare 6 upcoming events by date and location. Open a race guide for the course, recorded editions and official entry information where available.
Events to explore include Will Rogers Ultra, Sycamore Canyon Ultras and Leona Divide.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
6 listed events · 6 with upcoming dates
Upcoming 100k events
6 matching events, earliest date first. Entry availability is shown separately.
Will Rogers Ultra
USAPacific Palisades, California
Timed and fixed-distance trail races on a loop at Will Rogers State Historic Park.
Date listed · latest organiser confirmation not yet checked.
Sycamore Canyon Ultras
USAPoway, California
Looped trail ultras and a half marathon at Sycamore Canyon Preserve.
Date listed · latest organiser confirmation not yet checked.
Leona Divide
USALake Hughes, California
Mountain trail ultras and a 30K starting in Lake Hughes.
Date listed · latest organiser confirmation not yet checked.
Coyote Two Moon
USAOjai, California
Mountain ultras through Los Padres National Forest above Ojai.
Date listed · latest organiser confirmation not yet checked.
Malibu Canyon Trail Races
USAMalibu, California
Trail ultras and shorter races in Point Mugu State Park.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Lost Sierra Endurance Race
USADownieville, California
Mountain trail races through the northern Sierra Nevada around Downieville.
Date listed · latest organiser confirmation not yet checked.
Race archive
Past races and previous editions
Looking back at a race? Browse the guides below for recorded editions. This section also includes events awaiting a new date and cancelled editions. Previous editions of races in the upcoming calendar are available through their race guides above.
No separate archived race guides are listed for this selection yet.
View full race archive (0) →Choosing a race in California
The unfiltered upcoming calendar includes events in Downieville (1), Lake Hughes (1), Malibu (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about 100k events in California
What should I check before a running event in California?
Choose your distance, then check the route, elevation, cut-off time and entry conditions in the organiser’s race guide.
Which trail 100k events are coming up in California, United States?
Will Rogers Ultra is listed for 27 February 2027. Sycamore Canyon Ultras is listed for 6 March 2027. Leona Divide is listed for 17 April 2027. Check the race guide and organiser’s latest information before making plans.
Where can I find race entry details for California, United States?
Follow the link from the race guide to the organiser or entry provider, where one is available. Check the entry deadline, eligibility and current availability there. A listed race date does not necessarily mean entries are still open.
Why has a race moved out of the upcoming calendar?
Once its listed dates have passed, a race moves to the past-editions view unless another upcoming edition is recorded. Cancelled events also leave the upcoming list. The race guide stays available, and the event returns when a new date is added.