50K events in California, United States
Find 50k events in California, United States. Compare 31 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 No Name Trail Races, Trail Run at Sly Park - Fall and Chino Hills Trail Run — Fall.
Compare running races by distance, date and surface, from shorter road events to trail races and ultras.
31 listed events · 31 with upcoming dates
Upcoming 50k events
31 matching events, earliest date first. Entry availability is shown separately.
No Name Trail Races
USAAgoura, California
Trail races through Cheeseboro Canyon in the Santa Monica Mountains, with an ultra, half marathon and shorter course.
Date listed · latest organiser confirmation not yet checked.
Trail Run at Sly Park - Fall
USAPollock Pines, California
Autumn trail races around Jenkinson Lake at Sly Park Recreation Area.
Date listed · latest organiser confirmation not yet checked.
Chino Hills Trail Run — Fall
USABrea, California
Autumn trail races through chaparral, oak woodland and the hills of Chino Hills State Park.
Date listed · latest organiser confirmation not yet checked.
Rio Del Lago Endurance Runs
USAGranite Bay, California
Trail ultras starting at Beals Point, following the lakes and foothills between Folsom and Auburn.
Date listed · latest organiser confirmation not yet checked.
Griffith Park Trail Races
USALos Angeles, California
Hilly trail races on Griffith Park’s singletrack and fire roads, starting at the Merry-Go-Round parking area.
Date listed · latest organiser confirmation not yet checked.
Calero Trail Run Winter
USASan Jose, California
Winter trail races on Calero County Park’s singletrack and rolling dirt paths, with several distances from one mile to an ultra.
Date listed · latest organiser confirmation not yet checked.
OTHTC High Desert Ultra
USARidgecrest, California
Desert trail races on rolling dirt roads above Ridgecrest, starting and finishing at Cerro Coso Community College.
Date listed · latest organiser confirmation not yet checked.
San Joaquin River Trail
USAFriant, California
Trail races following the hills beside Millerton Lake and the San Joaquin River, starting at South Finegold Picnic Area.
Date listed · latest organiser confirmation not yet checked.
Hunter S. Thompson Fear and Loathing
USASan Francisco, California
Self-navigated urban ultras from Twin Peaks through San Francisco, with free entry and optional trail sections on the longer route.
· Entry closed
Date listed · latest organiser confirmation not yet checked.
Doomsday
USACool, California
Trail races from the Cool Staging Area, with a 50K ultra and half marathon through the surrounding foothills.
Date listed · latest organiser confirmation not yet checked.
Woodside Ramble
USAWoodside, California
Trail races through the redwood forest and hills of Huddart County Park.
Date listed · latest organiser confirmation not yet checked.
Hacienda Hills Trail Run – Winter
USASan Jose, California
Winter trail races through the hills of Almaden Quicksilver County Park.
Date listed · latest organiser confirmation not yet checked.
No Hands Trail Run
USAAuburn, California
Trail races in the American River canyon near Auburn.
Date listed · latest organiser confirmation not yet checked.
Crystal Springs Winter Trail Run
USAWoodside, California
Winter trail races through Huddart Park and the coastal redwoods.
Date listed · latest organiser confirmation not yet checked.
Folsom Lake Sweetwater Trail Run
USAEl Dorado Hills, California
Trail races beside Folsom Lake, mainly on singletrack with some dirt road.
Date listed · latest organiser confirmation not yet checked.
Del Dios Trail Race
USAEscondido, California
Trail races around Lake Hodges, with singletrack and dirt service roads.
Date listed · latest organiser confirmation not yet checked.
Fort Ord Trail Run
USASalinas, California
Trail races through Fort Ord National Monument across two days.
Date listed · latest organiser confirmation not yet checked.
Jed Smith Ultra Classic
USASacramento, California
Looped races along the American River Parkway with paved and unpaved sections.
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.
Marin Ultra Challenge
USASausalito, California
Demanding coastal trail ultras through the Marin Headlands and Mount Tamalpais.
Date listed · latest organiser confirmation not yet checked.
Redwood (Spring) Trail Run
USAOakland, California
Trail races through Redwood Regional Park with redwood groves and ridge views.
Date listed · latest organiser confirmation not yet checked.
VALENCIA Trail Race
USAValencia, California
Hilly trail races on ridges and through canyons above the Santa Clarita Valley.
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.
Grizzly Peak Trail Run
USABerkeley, California
Trail races through the wooded hills of Tilden Regional Park.
Date listed · latest organiser confirmation not yet checked.
Cinderella Trail Run
USAOakland, California
Trail races through Joaquin Miller and Redwood Regional parks.
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.
San Lorenzo River Trail Run
USASanta Cruz, California
Trail races through redwood forests and across the San Lorenzo River.
Date listed · latest organiser confirmation not yet checked.
Elder Creek Night Runs
USAAnza, California
Night trail races through desert singletrack near Anza.
· Status TBC
Date listed · latest organiser confirmation not yet checked.
Harding Hustle
USAModjeska Canyon, California
Trail races through the Santa Ana Mountains on Harding Truck Trail.
· 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 Oakland (3), San Jose (2), Woodside (2). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about 50k 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 50k events are coming up in California, United States?
No Name Trail Races is listed for 24 October 2026. Trail Run at Sly Park - Fall is listed for 24 October 2026. Chino Hills Trail Run — Fall is listed for 7 November 2026. 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.