Trail Running calendar near Castaic 2026-2027

A rugged half marathon on Santa Cruz Island featuring oak canyons, five creek crossings, steep climbs and exposed ridge running. Organized by Ventura County Sheriff’s Search and Rescue, proceeds benefit SAR charities and entry includes boat..

A trail event in Silverado, CA, with marathon, 25k, half and 10k courses routed from Black Star Canyon; the marathon has 4,244' of elevation gain and aid stations are placed along the route.

The Rock Cobbler Trail Run 2.0 at Rio Bravo Ranch in Bakersfield on November 7, 2026 offers three off road routes from about 6 to 26 miles with stocked aid stations, official timing, camping, weekend food, and mandatory trail gear.

The Pacific Trails California by UTMB will take place in Lake Los Carneros from Saturday 14 November 2026 to Sunday 15 November 2026.

Trailsgiving at Elysian Park on November 14, 2026 features marked out and back trail routes on hard packed dirt with hills. Distances include 5k, 10k, 15k, and a half marathon with on-course aid and finisher medals.

The 30th annual Patagonia Salmon Run takes place in Ventura on November 15, 2026, as a 5K (listed at 3.14 miles). Online registration is required, the event aims for zero-waste, and a Patagonia store discount is available to bib holders.

Multiple distances including 5k, 10k, 15k and a half marathon take place at Whittier Narrows on November 15, 2026. The marked course uses out and back loops and features an aid station at the turnaround.

Terrain Race Irvine is an obstacle and mud focused 5K at Oak Canyon Park on November 21, 2026, featuring mud pits, walls, ropes and 11+ obstacles, plus pre race packet pickup and a post race festival with food, music and vendor booths.

A trail race in Griffith Park, Los Angeles on November 21, 2026 offering multiple distances from 10k to 50K. Organized by Keira Henninger Events with registration closing November 18 and listed entry fees from $103.43 to $189.87.

A community endurance event in Bakersfield on 11/21/2026 where a 4.2 mile loop starts each hour. Participants can run one loop, repeat loops through the day, or attempt twelve loops for about 50 miles with aid and free parking provided.

A Thanksgiving Day community run in Santa Clarita offering a 5K cross country course through Central Park and a 1K for children. The event benefits the Santa Clarita Track Club and awards medals to the first 600 competitors.

A Thanksgiving morning trail event in the Santa Monica Mountains with a 13.67-mile half-marathon, 10k and 5k on fire roads and singletrack. Half-marathon winners receive $500 and entries include a shirt, finisher medal, photography, breakfa..

A 28k trail run in Fremont Canyon at Irvine Regional Park featuring about 3800 feet of elevation change and four aid stations. The course runs on fire roads, is cupless, and participants are asked to carry personal hydration.

An ultramarathon at Point Mugu State Park in Malibu on December 5, 2026, offering 50 mile, 50K and 30K distances. The race is organized by Keira Henninger Events with a registration window, a waitlist, and multiple entry fee options.

A night trail race in Tarzana on December 5, 2026, with lighted routes through the Santa Monica Mountains. Offered as 5K and 10K, the event has notable elevation, aid stations, required headlamps, and post race medals and shirts.

A holiday themed run in Valencia offering 5k, 10k, 15k and a half marathon on looped trails with aid stations each loop. Entries include finisher medals, goodie bags, photos and posted results.

Reindeer Run at Griffith Park on December 19, 2026 offers 5k, 10k, 15k and half marathon routes on a shared hard packed dirt trail with an aid station, finisher medals, photos, live results and event app features.

A 68 mile ridge-line trail race across the Backbone Trail in the Santa Monica Mountains with about 13,600 feet of climbing. Solo runners need prior 50 mile trail experience; relay teams of 2, 3, or 4 are permitted.

Trail run and hike events in Griffith Park on January 24 2027, featuring 8M, 8K, 5K and a 2.2K kids run with marked courses, aid stations, participant shirts and finisher medals.

Trail events in Griffith Park on January 24, 2027, including an 8 mile out and back to the Hollywood Sign viewpoint, an 8K, a 5K, and a 2.2K kids loop with aid stations, timing, shirts, and finisher medals.