Trail Running calendar near Fullerton 2025-2026

Challenge yourself at the Billy Goat Mountain Climb near Silverado with steep climbs and sweeping views through Cleveland National Forest. Choose a 17 mile loop, half marathon or 10K and finish with a medal, race shirt and post race snacks.

Celebrate Easter with Hoppy Easter at Griffith Park in Los Angeles, offering 5k to half marathon options on scenic dirt horse trails shared with other park users. Enjoy custom finisher medals, on course aid and a festive outdoor vibe.

Hit the trails at Crystal Cove for Rock It in El Moro Canyon on April 4, 2026, choose a scenic 6K or challenging 10 Miler with climbs, descents and Pacific Ocean views. Run or hike, and enjoy a shirt, race photos and a finisher medal.

Run scenic trails at the Nature Made Great Race in Agoura Hills with distances from 1 mile to a half marathon and combo events. Enjoy a big post race party with food, music and shopping or join virtually.

Explore scenic trails at Diamond Valley Lake during Bedrock Valley Trail Runs, a weekend of trail races and gravel bike courses. Chip timed and cupless so bring your own hydration, with finisher shirts and medals for finishers.

Run the Leona Divide trail races in Lake Hughes, CA on April 18, 2026, with distances from 30K to 100 Miler. Western States qualifiers and AC100 tickets are on the line, with athlete guides and optional bib pickup the day before.

Run the Natro Noli trail race on Soboba Reservation in San Jacinto CA with marathon, half, 5k and kids 3k on scenic rugged single track. Limited to 100 runners and raising funds for a Noli student scholarship, with shirts and awards.

Run ocean view trails in Malibu at the Point Mugu Trail Run, with 13.3 mile and 6.9 mile courses that climb scenic switchbacks and ridge lines. Finish to a lively post race festival with food, beer garden, awards, music and finisher medals.

Machete Trail Madness 100k at Lake Perris on April 25, 2026 offers 10k, 50k and 100k trail races on very technical terrain with steep climbs and stunning lake views. Camp at the start, enjoy aid stations and free race photos.

Run rugged, scenic trails with punchy climbs at Las Virgenes Canyon Ultra in Woodland Hills, Los Angeles on April 25, 2026. New 100K joins a range of distances from 6K to 84K, with full support, music and post race swag.

Join the 14th annual Aut2Run at CSU Channel Islands Apr 26, 2026 with races from 15K to a mile, a Fun K and virtual options for all ages. All proceeds support Autism Society Ventura County and promote inclusion.

Run scenic vineyard trails at Orfila Vineyards in Escondido on May 2, 2026 and celebrate with a private post race wine tasting. Choose 3, 6 or 9 mile laps, enjoy food trucks, a finisher medal and limited registration for 400 runners.

Run the O'Neill Park Trail Races on Saturday May 16 2026 in Trabuco Canyon with distances from 10k to 50k through oak and sycamore canyons. Scenic singletrack, rolling climbs and coastal scrub create a memorable trail race experience.

Bring 80s martial arts vibes to the LA River Path at the Cobra 5Kai, 10Kai and Half Miyagithon on May 16, 2026 in Canoga Park. Expect retro music, themed signage, costumed fun, a finisher medal and a same day virtual option.

Race the 10K Spartan Trail at Big Bear on May 17, 2026, across technical singletrack in high altitude pine forest with sweeping Southern Sierra views. The weekend includes Spartan obstacle races and a GOVX service member discount.

Nanny Goat is a Memorial Day weekend multi distance ultrarun at a Riverside horse ranch where you run timed laps on a flat 1 mile loop. Camping, family friendly amenities and medals for every runner who completes at least one lap.

Return to Hahamongna Watershed Park on May 24, 2026 for a day of team relays and solo challenges. Choose a 50 km relay with teams of up to five, a solo 50 km ultra, or a 10 km fun run amid scenic Pasadena trails.

Run Forever Brave at West Creek Park in Valencia on May 24, with 5k, 10k, 15k and a half marathon on scenic out and back loops. Aid stations every loop, finisher medals, free photos and post race snacks make for a fun, community day.

Run scenic mountain trails in the Angeles National Forest near Palmdale with 50k and half marathon options. Expect technical singletrack, big elevation and full race services including finisher medals, aid stations and finish line tacos.

Discover the Malibu Canyon Trail Races on June 6, 2026 at Point Mugu State Park in Malibu, CA, where single track and fire road routes wind across coastal ridges and canyons. Distances range from a half marathon to 100K with athlete guides..