Trail Running calendar near Chino Hills 2026-2027

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 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 Thanksgiving morning coastal 1K 5K and 10K walk and run in Huntington Beach that raises funds with World Help to drill clean water wells serving communities worldwide.

One mile loop ultra on hardpacked dirt with timed 3, 6, 12 and 24 hour options plus relay teams. Live chip timing, free on course camping, continuous food service, and a 31 hour buckle challenge to reach 100 miles.

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.

A Last Person Standing race in Yucaipa, CA on December 11, 2026 where runners repeat hourly 4.167 mile loops until one person remains. The overnight event uses foothill trails, headlamps, a basecamp with firelight, and limited camping.

A trail running event at Crystal Cove State Park in Newport Beach on December 12, 2026 offering 15K, 6K and a Kids 1K. The 15K includes a $2,000 prize purse and multiple aid stations on marked singletrack.

Trail races at Daley Ranch near Escondido with 10 Mile, 10K and 5K courses on single track and dirt roads; the 10 Mile reaches Stanley Peak for a 360 degree view and the event limits entries to 300 runners.

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 trail running event centered in Avalon, Catalina Island offering a 50 Mile, a 50K and a TRIPLE CROWN Challenge across the length of the island with ocean views, aid stations and volunteer support.

Experience a diverse trail running event in Escondido featuring everything from a 50 mile ultra to a stroller friendly 5k. Explore the valley floor or climb to the summit of Raptor Ridge in this cupless race series.

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.

Jan 23 and 24 2027 Spartan weekend at Lake Perris featuring Sprint 5 km, Super 10 km, Beast 21 km and kids races. The course is described as flat and fast and includes multiple obstacles.

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.