Trail marathons in California, United States
Find trail marathons in California, United States. Compare 14 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 Trail Run at Sly Park - Fall, Saddleback Marathon and Griffith Park Trail Races.
15 listed events · 14 with upcoming dates
Upcoming marathons
14 matching events, earliest date first. Entry availability is shown separately.
Trail Run at Sly Park - Fall
USAPollock Pines, California
Autumn trail races around Jenkinson Lake at Sly Park Recreation Area.
· Marathon
Race details, entry and past editions →Entry information ↗Saddleback Marathon
USABlue Jay, California
Saddleback November mountain marathon.
· Marathon
Race details, entry and past editions →Entry information ↗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.
· Marathon
Race details, entry and past editions →Entry information ↗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.
· Marathon
Race details, entry and past editions →Entry information ↗Dirty December Trail Run
USASan Diego, California
Holiday trail races at Sycamore Canyon, with three fixed distances and a timed hill-climb challenge.
· Marathon
Race details, entry and past editions →Entry information ↗Hacienda Hills Trail Run – Winter
USASan Jose, California
Winter trail races through the hills of Almaden Quicksilver County Park.
· Marathon
Race details, entry and past editions →Entry information ↗San Diego 50 & Trail Runs
USAEscondido, California
Trail races through San Pasqual Valley and around Lake Hodges, with shorter and junior options.
· Marathon
Race details, entry and past editions →Entry information ↗Crystal Springs Winter Trail Run
USAWoodside, California
Winter trail races through Huddart Park and the coastal redwoods.
· Marathon
Race details, entry and past editions →Entry information ↗Folsom Lake Sweetwater Trail Run
USAEl Dorado Hills, California
Trail races beside Folsom Lake, mainly on singletrack with some dirt road.
· Marathon
Race details, entry and past editions →Entry information ↗Redwood (Spring) Trail Run
USAOakland, California
Trail races through Redwood Regional Park with redwood groves and ridge views.
· Marathon
Race details, entry and past editions →Entry information ↗Grizzly Peak Trail Run
USABerkeley, California
Trail races through the wooded hills of Tilden Regional Park.
· Marathon
Race details, entry and past editions →Entry information ↗Cinderella Trail Run
USAOakland, California
Trail races through Joaquin Miller and Redwood Regional parks.
· Marathon
Race details, entry and past editions →Entry information ↗San Lorenzo River Trail Run
USASanta Cruz, California
Trail races through redwood forests and across the San Lorenzo River.
· Marathon
Race details, entry and past editions →Entry information ↗Redwood Summer Trail Run
USAOakland, California
Trail races through Redwood Regional Park with a short children’s dash.
· Marathon
Race details, entry and past editions →Entry information ↗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.
Big Sur Trail Marathon
USABig Sur, California
Big Sur Trail Marathon in Big Sur.
Next date not listed
Race guide and recorded editions →Choosing a race in California
The unfiltered upcoming calendar includes events in Oakland (3), San Jose (2), Berkeley (1). Use the town filter to compare locations, then check the race guide for the start venue and organiser’s travel information.
Questions about marathons in California
Which trail marathons are coming up in California, United States?
Trail Run at Sly Park - Fall is listed for 24 October 2026. Saddleback Marathon is listed for 7 November 2026. Griffith Park Trail Races is listed for 21 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.