Trail Running calendar near Irvine 2025-2026

Challenge yourself on rugged trails at The Oaks on the Soboba Reservation with marathon, half, 5K and kids 3K options. Expect hills, stream crossings and great community energy as part of a race supporting Noli Indian School scholarships.

Join the 14th annual Aut2Run for Autism in Camarillo with in person and virtual options to benefit Autism Society Ventura County. Choose 1 mile to 15K, plus a kid friendly FunK, earn a finisher medal, and support local programs.

Run scenic trails at O'Neill Regional Park on May 16, 2026, with distances from 10k to 50k for every level. Expect challenging singletrack, on site bib pickup, and a friendly race day vibe that welcomes beginners and ultrarunners.

Run the 10K Spartan Trail at Big Bear Lake on singletrack through high altitude pine forest with technical climbs, descents and sweeping Sierra views. A scenic, challenging mountain course that joins a Spartan Trail weekend of adventure.

Timed loop endurance run on a flat 1 mile course at a Riverside horse ranch over Memorial Day weekend. Choose solo or team formats from 3, 6, 12 or 24 hour events or go for the 100 mile challenge and rack up laps.

Run high mountain trails around Pacifico Mountain in the scenic Angeles National Forest with options of a 50k ultra or 21k trail race. Enjoy alpine views, aid stations, finish line food and on course support for a true SoCal trail day.

Hit coastal singletrack at the Malibu Canyon Trail Races in Point Mugu State Park. Pick distances from half marathon to 100K and enjoy stunning ocean views and a rewarding trail challenge on June 6, 2026.

Run 50 miles of iconic Pacific Crest Trail single track through the Laguna Mountains, with big climbs, rocky sections and sweeping views. Part of the SoCal Ultra Grand Prix, this classic out and back is a true test for trail lovers.

Run the Griffith Park Trail Marathon Relay or 8K on June 7 for scenic, challenging trails in iconic Griffith Park. Chip timing, a finisher medal, premium tee, live music and food trucks make for a festive finish.

Run Phoenix Rising at Griffith Park with 5k, 10k, 15k or half marathon options on scenic dirt trails around Crystal Springs. Expect aid stations, finisher medals, free photos and a friendly shared trail with hikers and equestrians.

Challenge yourself on the rugged trails of Black Mountain in San Diego on June 20, 2026 with 50K, 25K and half marathon options. Expect technical rocky single track, sweeping views and lively aid stations in a wild coastal landscape.

Tough Topanga invites trail runners to scenic Topanga State Park with 10k, 15k and a 1 kilometer junior race over winding singletrack and big climbs. Finish with a handmade medal and tee, post race breakfast, a beer garden and massage.

Take on the Harding Hustle in Cleveland National Forest on July 18, 2026, with 50K, 30K and 15K options over scenic, rugged jeep road terrain. Expect hot July conditions, stocked aid stations, chip timing and hearty post race food.

Event overview Tough Mugu is a trail running event held at La Jolla Group Campground in Point Mugu State Park, 1 mile north of 9000 E Pacific Coast Hwy, Malibu, CA 90265. The event includes the following race distances: 10k 25k The event..

Join Hot to Trot at Griffith Park on July 18, 2026 for 5k, 10k, 15k and half marathon options on scenic dirt trails. Enjoy aid stations, custom finisher medals, free photos and a friendly community vibe.

Run under a full moon on scenic loops through manzanita and rock formations near Cahuilla Mountain, with distances from a 9 miler up to 50K. Limited to 200 runners for an intimate nighttime trail experience.

Run scenic 5K, 10K or half marathon around Green Valley Lake with lake loops, forest trails and a steady climb to a sweeping viewpoint. Celebrate after with food, live music and community energy while supporting the Children's Forest.

The Bulldog Ultra The Bulldog Ultra is a trail running event held in the Santa Monica Mountains at Malibu Creek State Park on August 15, 2026. Distances offered include: 25k Trail Run 50k Ultra 75k (listed in the event schedule) The cours..

Run the Ascot Hills Challenge 5K on scenic trails above East Los Angeles with sweeping views of Dodger Stadium and the Hollywood sign. Proceeds benefit Wilson High School fire and police cadet programs and help preserve Ascot Hills Park.

Run the legendary Angeles Crest 100 mile on October 3, 2026, a point to point mountain ultramarathon from Wrightwood to Loma Alta Park. Roughly 21,610 feet of climbing and its original US 100 pedigree make it a Western States qualifier.